wednesday, june 15th

sorry for the late scribe guys! for class we just did review and handed in our worksheet 'the contributers in determing the speed of light. dont forget that our exam is tomorrow morning, june 17th at 9:00 and also just a reminder dont forget to bring your exam slips. if you didnt get your exam slips yet, please see ms. k :) good luck everyone and study hard!

June 14 2011

At the beginning of class we corrected questions in The Nature of Light: Part 2 Green Booklet. If you weren't able to get the answers then see Ms. Kozoriz or anyone else in the class. After that, Ms. Kozoriz handed out our exam slips for FRIDAY, JUNE 17 @ 9AM (remember our exam is only for 2 hours).. For the exam, you'll need a ruler, protractor, calculator, a pencil/eraser and BRAINCELLS :). If you didn't get your exam slip then see Ms. Kozoriz ASAP. For the rest of the class, we did our reviews and/or our research on the scientists.

PAR will scribe next ..... dont forget to study for the exam!! :D

Corpuscular Theory, Wave Theory & Determining the Speed of Light

Today we started off the class by correcting the problems in 'The Nature of Light: Part 2 The Wave and Particle Models of Light' booklet that we were assigned the day before. You can find the answers directly from the salmon book from pages 3 through 18, or ask a friend!

Next, we were given two worksheets "Appendix 2.4: Chart for Evaluating the Models of Light" one of which was yellow and the other pink. The yellow sheet should have the model as "Corpuscular Theory" or "Particle Theory" if you do not like using the word corpuscular and the pink sheet should have the model as "Wave Theory." We went through the supporting arguments and counter-arguments for each phenomena for the Corpuscular Theory, which you can also find the answers within the salmon book. We were then given 15 minutes to finish the pink sheet and find the supporting arguments and counter-arguments for each phenomena in the Wave Theory. We also corrected this. (All answers are found in the book if you read pages 3-18 the previous day!)

The next worksheet handed out was "BLM 2.10: Contributions to the Determination of the Speed of Light" which should be handed in on Tuesday, the latest. The worksheet is straight forward and you can find the answers to the boxes on pages 9 and 10.

That was all for today. Have a great weekend everyone! Don't forget to get started on your exam review..the exam is in SIX days!! Friday, June 17th 2011 at 9AM sharp!

The next scribe will be Jaksen

June 9 2011

Hello! Today we got our tests back, you can make corrections and hand
it back in to get a bonus mark. The class was used as a work period
and Ms. K assigned pages 3-18 of the pink booklet to read and
complete questions 1,3,4,9,10, 11, and 12. See everyone tomorrow!

Next scribe shall be Pink!

8 more days till the physics exam!

June 6, 2011

All we did for today’s class is answered the Review Problemzz on the Board!

Review Problem Answer Key!

1. Opposite attract likes repel

2. 2. Magnet polarizes the object & attracts the electrons of the object

3. - Temporary magnet

- Nail paperclip

- Tiny loops of current within the substance

4. Domain are no longer aligned

5. It unaligns the magnetic domain weakening the strength of the magnet
. . . . . .

6. S-----------------------N
x x x x x x

7. -Aluminum
-Cobalt
-Nickel

8. You cannot isolate them; because the magnetic domains only flow in are directions. This means the domains would remain uncharged even after breaking it in half.

9. To determine the polarity by using the second right hand rule, curl your finger around the loops in the direction of the conventional current, thumb points toward the North Pole of the magnet.

10. Thumbs à Flow of current

Finger à Magnetic field

Palm à direction of force on wire

11. South Pole, because the north of a magnet is attracted to the magnetic South

12. Magnetic declination is the given location between the magnetic North & Geographic South. Also called the angle of declination.

13. An electric Field surrounds a stationary electric charge.
A magnetic field surrounds a moving electric charges as well as an electric field.

14. B = Fb/IL
0.20/0.10*5 = 0.40T

15. F=BI

= (115min)(5.0x10^-5)

= (4.00x10^-2)

= 2.3N

16. FB = ILB

0.040 = (2.0)(0.1) B

B= -20T

17. Magnetic Field = Fb/IL

Fb=BIL = 0.900T x 8.00A x 0.500m = 3.60N

For does PPL who did not show up to Mrs. K class and don’t understand how we got this answers, talk to Mrs. K before the third Period end. Have a nice half day 2morrow. Better to review Magnetism and Electromagnetism 2morrow because Wednesday we have a test for this unit.

Friday, June 3rd/2011 Magnetism and Electromagnetism V

Yesterday in class since most of the students are missing, Ms. K went through p 35-36 with us. The rest of the period is working period. A reminder to all of us, hand in the lab next Monday.

Wednesday, June 2nd/2011 Magnetism and Electromagnetism IV

Today in class we had to finish pages 35 and 36 if we were not done them, as they were assigned yesterday. We were also supposed to do, problems 6 to 17 in our Magnetism and Electromagnetism booklet which is on page 39.

The next scribe will be whoever wants to be the next scribe.

Wednesday, June 1st/2011 Magnetism and Electromagnetism III

Today in the beginning of class we had our Electronic Fields booklet handed back to us. Proceeding that we read "Forces on Current In Magnetic Fields" which is from pages 23 to 25, actually before that we had corrected the two electromagnet assignments about the 1st and 2nd Right-Hand Rule that were handed to us on Monday. She later gave us the option to pick up a Grade 11 Physics Review workbooklet. After she then gave us the rest of the period to work on our magnetism lab.

The next scribe will be Gabe.

Monday, May 30th/2011 Magnetism and Electromagnetism

Today in class we have read pages 20-23 on Electromagnetism. We learned that an electric current can create a magnetic force that would be perpendicular to the electric current. We learned that the strength of a magnetic field is proportional to the current when the wire is straight. We learned how to find the direction of the magnetic field on a straight wire, when given the currents direction, by using the first right-hand rule. We also learned how to work with wires that are wrapped in loops (solenoid), by using the second right-hand rule. We were given
electromagnetism assignments to finish and tomorrow we will work on the physics lab worksheet we have, in class!
The next scribe will be Ahmed!

May 25, 2011

Today in class we got a new booklet called Grade 11 Physics Fields: Magnetism and Electromagnetism. We started off the book with a lab.

The lab was about drawing magnetic field lines using 2 magnets and a compass. Both arrows on the compass are magnetized to point to the North/South Poles on Earth. The 2 magnets both have a North/South end on them, and are opposite in charge. We laid the magnets horizontally from each other, both North ends of the compass facing North, and placed the compass in between them and began moving the compass to see where the arrows point to draw the field lines. Next we flipped one of the magnets so both North ends where facing each other and drew the field lines from there.

When we finished the lab, we had to read and do page 26, which was a study guide.

May 19, 2011

Sorry this is a day late, I totally forgot about this yesterday.
Not like anyone missed anything anyways since we were all in class, but in case anyone forgot, we went over pages 23 - 28 and got the answers. Then we looked at Millikan's experiment and watched a short clip of that. For homework we had to do pages 29 - 34, but we corrected it today in class.. so this is a pretty pointless scribe.. ANYWAYS

Have a good weekend guys (:

May 20, 2011

Today we just corrected page 29, 32, and 34 and everyone was here today so i was told not to put the answers up, then after we just studied for the test on tuesday! The test is on the green and ivory booklets and Ms kozoriz said all you need to know is whats in the booklets.

* Make sure you study for the test on TUESDAY MAY 23!
- The test is on the green and ivory booklets.
thats everything have a good long weekend :)

May 17, 2011

Today we got our new booklet, " Grade 11 Physics Electric Fields" and read pages 1 -10 roughly in class. And we did our first lab for this unit on page 22.
Homework:
Page 23, 24 and 25

May 11, 2011

So on wednesday we first corrected page 39 # 1-7
ANSWERS:
1. a=0.29m/s2
2. m=5kg
3. F=22222N
4. F= 144.56N
5. a=-0.53m/s2
6. w= 666.4N
7. g=9m/s2

Then we read pages 18-22 and did the questions on page 23, 27-28 and 29-30. Sorry it was late, it wouldn't let me post anything. That's everything:)

Covering Thursday, Friday & Monday. May 12/13/16

Salutations.

I apologize for the late scribe. Blogger was down on Thursday/Friday, and after that I myself had personal difficulties with the site. Nonetheless, I've finally succeeded.

Anywho, to recap Thursday which probably is of no relevance anymore to you folks, we completed the lab. It included the usage of bricks, string, different papers (different friction), and a cart. We tested the force required to pull the bricks on each type of paper, constant speeds at different velocities, rolling a cart or sliding, and while adding even more bricks. Although there's not much left to say, there were a few tiny observations I had made:

• First of all after completing all tasks, it turns out our meter used to measure the forces were completely off. I know it's too late to go back and check, but the meters we used were off by 1 or 2 Newtons, which are very critical and introduce much more error in the final results. Yes, we did everything over again.
• The relationship between the amount of bricks and force used to pull these bricks were directly proportional in our results. With that being said, as the amount of bricks placed on top were increased, force required to pull these bricks were increased. We had a result something along the lines of 5N, 10N, 15N, so on and so forth in increments of 5 Newtons.

Moving on to Friday, it was more of a catch-up day. We were assigned the questions on the following page of the lab, which included a few thinking questions and a graph. The graph was relatively easy, and I'm sure by now most of you know how to do one. The only question I can recall was the one asking when friction is used to our advantage or is simply a hindrance. Simple answers like creating fire (advantage) and moving heavy objects (disadvantage) did the trick. We were then assigned the last few questions of the booklet, and pages "5-2" and "5-3", about kinetic friction and static friction.

Finally, today. In the beginning of class we went over all of the questions assigned to us. Since we were to hand in our booklets, which I hope most of you did, I can't recall many of the questions. We went over finding the kinetic/static frictional forces, as well as relationships between the two. For the last half the class, we were to read a few pages in the green textbook and answer questions. I again did not jot those numbers down, but most if not all of us do not have a green booklet at home anyway. We will be receiving new booklets tomorrow in class. Don't fear!

Again I apologize for the late scribe, but that's all that's happened in the last 3 days of class. If I had my booklet still, I would have been able to go over more questions but those were all I could recall. I encourage you to argue with me if i'm incorrect with any of the above information.

Good Night!

May 10, 2011

So for today we corrected our homework from yesterday which was pages 32, and 34. We also did two in class assignments on page 24-25 "Free Fall on the Moon", and the other one is on page 39 "Review Problems". If you haven't finished the two in class assignments you should finish them tonight because I believe that they might be due tomorrow. :)

Homework for today:
Page 24-25 "Freefall on the Moon"
Page 39 "Review Problems"

Page 32 Answers:
1) a. 19.6m/s b. 58.8m/s
2) a.19.6m b. 176.4m
3)

4) a. 4.9m b. 19.6m c. 44.1m
5)13790N [up]
6)6.8m/s(sqaured)
7)4.7m/s(sqaured)
9)0.6m/s(sqaured)

Page 34 Answers:
a. 10
b. 6
c. 0
d. -2
e. -10
f. 0
1) most
2) a,b
3) d,e
4) still downward
5) c, f
6) c, f
7) c
8)greater

May 6 and May 9 '11

May 6 '11
Last Friday we got a lab to try and determine the force of the gravitational field strength. We had a little weight that had about 0.1 kg of mass that was attached to a string of varying length and had it swing from the same height letting it go back and for 20 times. Then we recorded the data onto the graph and answered the questions on the back. (I think this was all we did.)

May 9 '11
Today we added information to pictures on page 26 of our green booklet to describe whats happening to a weight attached to a spring scale (for the elevator worksheet). The first scale is at rest (the elevator isn't moving, moving at a constant speed), with the next scale reading more newtons on it making it have more weight (elevator just starting moving up, slowing to a stop going down), with the last scale having less newtons acting on it making it weight less (elevator slowing going up, just starting going down).

Next we went to page 32 and answered question 8. The answers being:
A) 490N
B) 490N
C) 380N
D)355N
E)490N
F)490N
You can try and use the equation m = Fg/g to figure it out.

After we read pages 16 & 17 then did the problems on page 32 & 34. We also had roughly 20 minutes to finish the lab we got on Friday.

The next scribe will be Food.

May 5th, 2011

Hi everyone, I am scribing for today.

What we did today was just finishing the lab we started yesterday. Then we checked the answers on P.8-10 in the booklet. At last, the substitute teacher assigned the homework which is read P.12-13 and finish P.14-15.

Justin would be the next person to scribe.

Kevin

May 4, 2011

Sorry guys, I'm posting this one day late.

What we did:

We read pages, 3-6 in the green booklet titled "Physics 11 Fields Gravitational Fields"

- Learned about the gravitational field, gravitational force and weight, and apparently weightlessness.

After that we did a lab on the forces involved with elevators, using a scale and a 1000g weight as an example.

That's all we did on that day, so if you missed it you can easily catch up!

April 28, 2011

At the beginning of the class, we continue reading on page 17, Sound Quality. We learned that the sounds made by the human voice and musical instruments are much more complex and sound differently even though some instruments give off the same frequency. In musical terms, the difference between the two waves is called the timbre(TAM-bər), tone colour or tone quality. We also learned that the "Middle-C" on a piano has a frequency of 261.63Hz, but on the Just Scale system, middle C has a frequency of 256, this is what we are going to use.

Diatonic Scale consists of three major triads.

Major Triad is a collection of three notes with frequency in the ration of 4:5:6. If you want to know the frequency of E or G note, you just have to use the ratio between notes (e.i. C note is 256, then the frequency of E note is (5/4)(256) which is 320Hz).

Octave consists of interval between a given musical tone and one with double or half the frequency.

We finished reading pages 17-19 and if you want to know some important definitions and summarization of the whole booklet, go to pages 22-23. Finished correcting the homeworks given to use yesterday.

I think that's all, anyways be ready for the TEST NEXT WEEK and ENJOY your long weekend!

P.S. Anyone wants to scribe for Monday, May 2nd?

April 27, 2011

For today's class, Ms. K gave us the time to finish up the lab activity involving the speed of sound. We also checked the homework from pages 26-27 (#10-16) of the Sound Unit booklet.
Grade 11 Physics: Unit 1.3 Sound and page 26 #17-20 will be check the next day.

Just a reminder that the lab is due on the day of our test, which is next week, Monday (i'm not sure if that is the date). The whole booklet will be handed-in that day.

I forgot to scribed for this day so i am going to work double shifts. haha.

Lab Activity: Speed of Sound

For today's class, we did a lab activity involving the speed of sound. Using a 1000-mL graduated cylinder, a glass tube that was approximately 40cm in length and 3.5cm in diameter, water, metric ruler, thermometer (non-mercury), 3 tuning forks with different frequencies, and also a tuning fork mallet, we were able to do perform the lab.

The objectives of this lab:
- Collect and organize data to obtain resonant points in a closed pipe.
- Measure the length of a closed resonator.
- Analyze the date to determine the speed of sound.

To perform the lab, measure the air temperature inside the glass tube, as well as its diameter, that is placed inside the water-filled graduated cylinder. Once this is done, strike the tuning fork, while holding it by the base, and place the vibrating fork over the open end of the glass. Then slowly raise the glass tube and the fork until you hear the loudest sound produced. Once you've figured this out, measure the distance from the water to the top of the glass tube and record this data.

*To completely figure out how to do this lab, the objectives and procedures are found on pages 28-30.
*Questions for this lab is found on page 30.

NOTE: This lab is due on the day of our test, which maybe next week. The whole booklet will be handed-in that day.
: For tomorrow's class, pages 26-27 (# 10-16 ) of the Sound Unit booklet will be checked.

Next scribe: Eric Vitug

April 25, 2011

At the beginning of the class, we checked the homework in the booklet given to us last Friday.

Pages 24-25; #1-12. Also, recent lab we had have been given out by Ms. K, its the one with the magical ruler, tuning fork thing.

Midway through the class we watched several clips pertaining to the characteristics of sound waves. Reading through the booklet would help understand the concept.

After watching the short clips, we were just given some more work from the booklet. Pages 26-27;#1-16 until the rest of the class to work on it and that's all. :))

Next scribe: Karla.

April 21

This class was all about correcting the test paper that Mr. Vincent had given us.

It was all about Refraction, Reflection Diffraction.

The multiple questions was not that difficult.
These answers are in order.
d,c,c,c,d,b,c,a,c,c,destructive interference, index of refraction, increase, wave ray, focal point.

Part B and part C was rather challenging for some people.

Here are the important labels in question number one. normal, incident wave front, incident wave ray, angle of incidence, barrier, refracted wave front, refracted wave ray, angle of refraction. What is happening is that the wave is coming from a shallow water to a deep water. In question number two, it was all about diffraction. As water waves enters an opening some will LAG behind when hit by the barrier. Two conditions which are required to maximize the phenomenon is the larger the wavelength the greater the diffraction and the opening should be smaller. Number three is where a parabolic reflector must be labelled.

Part C and D are calculations about Snell's Law and the interference pattern.




We are now in the sound unit.

Dwight already mentioned the definitions involved in this unit. The task is to READ PAGES 3 TO 10 IN THE PINK BOOKLET AND ANSWER PAGES 24, 25...... AND ON PAGE 26, ANSWER 1 TO 9. IF YOU HAVE SPARE TIME, FEEL FREE TO ANSWER PAGE 32. THE WORD SEARCH PUZZLE.



HOPE YOU GUYS HAD A GREAT WEEKEND. :)

Next scribe is VaNiLLa_iScream

Sound Waves

Definition for Today Class’

Resonance - Rhythm with which you push, produce a large amplitude.

Sound of Reflection - the repetition of a sound resulting from reflection of the sound waves. (Echoes)

Sound of Refraction - The turning or bending of any wave, such as a sound wave, when it passes from one medium into another of different optical density.

Forced Vibration — The oscillation of a system under the action of a forcing function. Typically forced vibration occurs at the frequency of the exciting force.

temperature inversion - condition in which the temperature of the atmosphere increases with altitude in contrast to the normal decrease with altitude.

Out of Phase - an unsynchronized of sound

On the beginning of the class Ms K. Hand back our notes that we done yesterday. Ms K. show another video of Paul Hewitt about Sound Wave. On the first scene of the video, Paul talked about how the dolphin communicates to each other. He also talked about which sound will travel fastest, is it in Cold weather or Warm weather? à Paul answer is warm weather, because the air is less dense and also a collision of molecules of air in warm air is greater. Paul Hewwit also talked the gAng about which can you hear well is it Day time or Night time. à Paul answer is Night time, because the sound waves are bent when they travel from cold air into warm air. (Related: Refraction of sound).

Also he demo to the video how does resonance work. Click the link below to view the demo. à http://www.youtube.com/watch?v=zWKiWaiM3Pw&feature=fvwrel

. ‘’ It is not how hard you push the swing it is about the rhythm how you push the swing’’ à(Resonance)

After Paul lecturing to the gAng, he show the video about the Tacoma Narrow bridge that was a tragedy to the Washington people where the Cat fault... kiddingJ. The bridge collapse because the oscillating of the wind into the bridge. After the cat destroyed the bridge the video ended and Ms K gave us some time to finish our lab report but luckily she gave us more time to hand in the lab tomorrow. Ms K asked us to read the booklet page 1-6.

Next Scribe: BryanC.

April 18 and 19, 2011

Yesterday we had our Waves in 2D test. It took the whole period so that was all for yesterday.

Today we talked about Sound. We watched a video with Paul Hewitt. Most of the beginning was review of what we already learned (parts of a wave, kinds of waves, how to find frequency/period, etc). The rest of the video was describing how CD's work in comparison to Records, how frequencies of Radio Waves operate, a man had this machine showing how sound waves are produced, and how someone who could invent a better windshield wiper could be rich.

After the video we got a lab that is due at the end of tomorrow's class. The lab was about sound and how to produce them. We used rulers (part of the ruler on the table with some hanging off, and plucking it), tuning forks (hitting them with a rubber hammer), and graduated cylinders (filled with water at different levels and blowing against the top).

The sound unit will go onto next week with a test on Thursday (from what I remember).

Sorry this is late (I forgot :D?)

April 15th

Today in class we did our review for the upcoming test on Monday. We learnt about Reflection, Refraction and Diffraction plus a bit in Harmonics and Standing Waves . Today was also the day the labs were due so hopefully everyone got the chance to hand in their work.

Well that was pretty much what happened in class, we just answered questions (Mr.V answered them and explained them) and labs were handed in. By the way Mr. V said he'll be posting the questions up just incase anyone missed them.

Have a great weekend everyone! And don't forget to study for the test on MONDAY!!! :)

Waves in 2D test review

Here is the review for Monday's Unit test. Please make sure you go through as much of it as possible. Also, please make sure to review your notes, especially the summaries at the end of each lesson and the examples we worked through. Don't forget, there will be one maybe 2 questions on harmonics and standing waves. They will be very similar to those provided in the review. Best of luck, have a good weekend.

Mr V.

Waves 2 d test review

April 13th & 14th

Hi everyone, sorry I forgot to scribe for yesterday therefore I'm scribing for today and yesterday. Yay!

April 13th

Today we did a lab called "Snell's Law and the bending of light waves."

The lab was to observe light when it bends and to figure out the refraction of water

- The LAB IS DUE FRIDAY!!! :)

P.S. Talk to Mr. V if you missed the lab and if you have any questions about it

April 14th

Well, for today's class we worked on the lab questions

BTW Mr. V added that the graph should be labeled with a legend (adding colour wouldn't hurt too) and dont forget a title plus you and your partner each need a graph and seperate answer sheets for the questions :)

Dont forget to not miss tomorrow's class we will be having a review for our test on the unit on MONDAY.

Nikki will be scribing for tomorrow

April 12, 2011 Wave Interference In two Dimensions

at the start of the class we answered the exercises given by Mr. V and review for a bit about Diffraction.. (the larger the wavelength and the lower the frequency the greater diffraction we can have regardless of how large or how small the barrier is) ..He also gave us the notes for that lesson.

the next part he gave us the note for today's lesson Wave Interference in Two Dimensions..
he showed us two circular waves meeting each other to show the constructive and destructive interference happened between the two waves..

a constructive interference will occur in a crest to crest or trough to trough while the destructive interference can be produced when a crest and trough met. we also took up about nodal lines.. nodal lines are produced when a constructive and destructive interference are produced..

we can also calculate the wavelength of waves producing an interference pattern.. Its in the notes given, memorize and it will help..

that's all and if I'm not mistaken we will be having a lab tomorrow, and be ready for the test on Friday(if not postponed).

There is a volunteer to scribe next..

God bless to all and have a sweet dreams..

Friday April 8th

Handed in 3 reflection assignment for marks
received refraction notes from page 13-19
given pg 10 of refractions for homework due on monday

Monday April 11th

we started to learn about DIFFRACTION
we looked at notes on the smartboard, that we will receive from mr. vincent as soon as possible
we received pages 26-27 on diffraction for homework due tomorrow

april 6th

well today we covered irregular wave fronts and circular wave fronts and straight wave fronts.we also covered reflected and incident waves
Mr.Vincent is going to be putting up all the notes up here so there really is no point in doing this.
our physics standing waves and extra practice worksheet are due Friday.
the next scribe shall be sa

April 4th/2011 Physics

For class today we received 9 pages of notes and 3 pages of homework. We learned what standing waves, nodes (nodal point) and antinodes (loops) are. We also learned what a resonant frequency (natural frequency), fundamental frequency, harmonics, and overtones are. We got a good amount of notes that we should review before next class and we have to answer the standing wave questions #1-4 and harmonic questions #1-5 by next class. The next blogger will be Ahmed Rage for the next class.

March 24 & 25

For these two days, we didn't do very much. On March 24th, we got our tests and labs back from Mr. Vincent, who then proceeded to give us corrections for both of them [the answers for the bonus questions were radial and coridal artery, by the way.]. Also, for those who missed their lunches during the talent show, we were given a chance to get our food and eat in class, as long as we didn't make a mess.

On March 25, we spent our final day before spring break watching an episode of Mythbusters, specifically the episode where they prove whether a lead balloon was possible, and if a wave caused by TNT can be surfed successfully. For those who don't mind spoilers, the results were "confirmed" and busted" in that order, respectively. There was also a plate of chips left out for anyone wanting a snack, but it was left untouched, I believe. That is all.

The next scribe shall be keinaan94. And yes, I am aware that my scribe is late, and I apologize for that.

March 23, 2011

Okay, so we didn't really do anything serious today. We got to class, sat down, and started writing a test for our unit about 1D waves. I hope I did well, I think the class did okay. So if you missed the test, plan some time to make up for it. There was no homework so I really don't know how to drag this scribe out any longer...

Well, yeah Jackson will scribe tomorrow!
byee!~

What we did today..

Well, today we just watched a short video that described almost everything that we've been looking at regarding the springs. The video showed transverse waves, longitudinal waves, reflected waves, transmitted waves and anything else that you could think of.
After that, we played jeopardy for the rest of class and that involved prizes! Too bad we didn't win any.... The jeopardy was to help review and study before the big test tomorrow. The test format will be something like this:

Part A (12 marks)

• Multiple choice and definitions

Part B (11 marks)

• Concepts and visuals

Part C (13 marks)

• Calculations

BONUS: 1 mark
TOTAL: 36 marks possible

Too bad I didn't put this up sooner for people who wanted to see the format.. Oh well!
Good luck studying anyways!
Jenna will be the next scribe (:

March 21, 2011: Constructive and Destructive Waves

Hello fellow classmates, so for scribing late today I needed to do some intense studying since my period two (intense homework period) was spent in the gym riot/pep rally. We started the class off with Mr. Vincent giving us new notes about wave interference. He also took attendance. After attendance we went outside to see a demonstration about wave interference and reviewed the types of waves that we have already learned. First Mr. Vincent and helper used the small denser spring to knock over a Styrofoam cup, things got more interesting when bricks were put on both sides of the cup so that the single wave produced by the spring wouldn't be able to hit the cup. Mr. Vincent and helper then timed their waves so that they will collide where the cup is between the bricks to produce a larger wave that will hit the cup. This type of wave produced is called a constructive wave. We went inside to go over the notes and learned how to draw constructive and destructive waves and were assigned the last page, Appendix 1.4: Waves in One Dimension, to complete as homework. Then we went outside again with the big spring to see how destructive waves work. Mr. Vincent told the helper to try and hit the cup that was placed midway of the spring, as he tried and tried Mr. Vincent kept creating an opposite pulse that was perfectly timed to meet up with helper's wave so that the amplitude was 0 and the cup would not be hit. Then Mr. Vincent showed us what a sound wave looks like. Then we went back in class to work on homework which we will go over tomorrow. Wednesday is our test so study that formula! Alright bai guys! Next scribe shall be David.

Answers from page 13.

Here are the answers for the "physics of a wave on a string question". Hope you all had a good weekend.

Mr V

a) (1 mark)

For each complete wave cycle of the wave, a particle on the string moves a total distance of 4A where A is the amplitude of the wave.

The total distance moved by the particle is 4(2.0 mm) = 8.0 mm.

b) (1 mark)

The frequency of the wave is 2500 Hz

c) (1 mark)

The period of motion is the inverse of the frequency: 4.0 x 10^-4 s

d) (1 mark)

For each second, or one period of motion of the wave, the vertical distance travelled by the particle is 8.0 mm or 0.0080 m. To travel a distance of 1.0 km, the number of cycles of the wave (or periods of motion) is

number of cycles = 1.25 x 10⁵ cycles

e) (1 mark)

The total time required is

t = (1.25 x 10⁵ cycles)(4.0 x 10^-4 s/cycle) = 5.0 x 10¹ s

Reflection and Transmission of Pulses and Waves

We started off the class with the answers given on the whiteboard from the homework we were assigned to finish the previous day; Describing Waves Assignment #12-16 and page 13 in our handouts #1-2.

Here are the answers you can refer to in case you missed today's class:

Describing Waves
12) D
13) V = λ/T or V = λf
14) 2 m/s
15) 24.2 m
16) 5 s

*For question 16, a few of us got the answer 2 s. I do not think Mr. Vincent heard us ask about it so may you please go over it on Monday?

Page 13
1) 5.2 x 10² m
2) 1.7 x 10^-5 s

We then moved onto Wave Reflections and Wave Transmissions where we experimented with two types of springs; a light medium spring and a heavy medium spring.

We all went in the hallway and watched the reflection pulse of the light medium and heavy medium spring. We learned that when we gave the spring a wave, once the pulse reached the barrier, the rope exerted a force upward on the support. This support then exerted an equal but opposite force downward on the rope. This downward force on the rope is what causes the pulse to reflect back on the opposite side, or inverted. This can be related to Newton's Third Law where; every action has an equal and opposite reaction.

From a free end of a spring, meaning there is no solid barrier at the end, once the pulse reaches the end of the spring, the particles exert an upward pull on the end of the rope which generates a reflected pulse that is now on the same side of the rope as the incoming pulse.

A reflection can be defined as the return of a pulse or wave from the boundary of a medium.

Next was Wave Transmission in Two Media, where we taped together the two different springs. We then tested out what happens to the waves as the two are taped together. We learned that when a wave passes from a fast medium into a slow medium, the particles in the slower medium have greater inertia. The reflected wave is inverted where the transmitted wave is not inverted.

A partial reflection is when a wave moves from one medium to another, some reflection occurs at the boundary between the two media, where some of the energy is transmitted into the new medium and some is reflected back into the original medium.

We then went back to class and drew diagrams of these different types of waves we saw because by the end of this lesson, we should be able to draw transmission and partial reflection of pulses and describe how pulses or waves in one dimension are reflected from a fixed end and a free end. I will attach photos of how the diagrams look like somewhere on this post since I cannot move the image..

There was a remaining 20 minutes of class when we received our next few pages of notes, pages #17-26. These pages should explain everything about the Reflection and Transmission of Pulses and Waves that we learned today.

For homework, we were assigned to finish any questions given in the pages #17-26. This is suppose to help us review for the test we have on Wednesday!

Last but not least, 7evin shall be the scribe for Monday's class. I hope this did not bore any of you..just wanted to cover everything! Have a great weekend.

Dynamics Test Answers

Manipulating Period and Frequency

For today's class we first started by correcting question 1-5 of the sheet "Describing Waves"

Here are the following answers just in cased some of you guys missed it:

1. Crests: B,E Troughs: D,G Neither: A,C,F,I,H,J

2. A is the wavelength and D is the amplitude

3. a) 3.9 b) 0.8 (it doesn't matter if your off by a bit)

4. frequency

5. a) 1/60 hz

After the worksheet corrections we were assigned to do a lab "Manipulating Period and Frequency"

For the lab we were supposed to be in pairs or in a group of 3, we first had to answer question 1-3 of the sheet (worth 3 marks) after answering the questions the procedure of the lab is at the back of the paper.

- we had to measure our pulse for 30s: first in a calm environment and then a measure of our pulse after a light activity such as running up the stairs 3-4 times.

- then we had to figure out the bpm, frequency and the period

- After measuring our pulse we then had a chance to experiment with the pendulum (the strings hanging from the ceiling with a small weight attached at the bottom)

- For the experiment the bob (mass) is pulled one meter horizontally from where it is hanging

- We then release the bob and it starts swinging back and forth

- Count 15 full oscillation timing it, record your trials (you need 3 trials) and fill in the frequency and period of each trial.

- After the pendulum experiment we then moved on to one of the hanging mass on a spring apparatuses

- We pull the mass 15 cm below its equilibrium point

- Let go and count 15 full oscillations and record the time

- You'll need three trials, and after you've gotten your recored time fill in the frequency and period

Well.. thats pretty much what we did today. LABS ARE DUE FRIDAY! and we got our test back

- PAR

Waves in One Dimension

In today's class, Mr. Vincent started teaching us about waves as it will be our new unit. He handed out papers that explained everything about waves and went through it all with us. We learnt that a wave is a disturbance that transfers energy from one place to another. One of the waves we learnt today is called a transverse (periodic) wave - produced by a disturbance that is moving back and forth continuously. The other wave is called a longitudinal (compressional) wave - the vibration of particles that travel the same direction as the motion of the wave. Waves have a pulse which is a single wave bump, they have crests which are the high points on a wave, troughs are the low points of a wave, and the amplitude of a wave is the maximum height between the top of a crest or bottom of the trough to the middle (particle's undisturbed position). Each wave also has a frequency - how many complete cycles (or crests) past a point per unit of time - which is measured in hertz (Hz), and a wavelength - distance from one crest to another or one trough to another. A period in a wave is the time elapsed between two successive crests passing by the same point in space and a cycle is how many times the particle does a complete oscillation (particle moving up & down or left to right) once.

Mr. Vincent then gave us a worksheet that helped us "describe waves" - learn the wave basics. We did questions 1-5 on the worksheet. We are doing a lab in tomorrow's class. & one last thing PAR will be the next to scribe :) hope this was a good scribe for my first time :) bye!

Last person to scribe this session is Paula!

March 9, '11 - Dynamics - Vectors

Today we started off by correcting the lilac coloured sheet "Grade 11 Physics: Dynamics-Vectors". Remember that you have to include the direction or unit in the answer or you'll lose marks. Then we went over the backside of the page, and the practice questions are for homework and we'll go over them tomorrow.
1. A boat aims itself due east at 15km/h across a northern current of 5.0km/h. What is the boat's resulting velocity?
2. What is a ball's actual velocity if after 2 seconds in the air, it has a Vy = 20m/s up and Vx = 10m/s?
3. What is a kite surfer's velocity if the waves are moving him East at 1.5m/s and the wind is blowing him North at 4m/s?

After we corrected questions 1-5 on Newton's Second Law (page 43) of the Dynamics booklet, and if you haven't finished questions 6-9 have them done for tomorrow. Then Ms K assigned pages 12 (Net Force) and 33 (Transparency 4-4 Weight and Normal Force) in the Dynamics booklet to be done for tomorrow as well.

If you need a protractor you can buy one from Ms K for $1. And don't forget the test on Friday!
BryanC to scribe next

Tuesday, March 8, 2011.

Salutations.

In today's wonderful class we went over our assigned homework pages in our Dynamics booklets. We went over the answers of page 31, "Transparency 4-2 Worksheet" and how it was done. Don't forget to convert what you're given (km/h to m/s, and hours to seconds) to fully answer what the question asks for. Unfortunately I left to go to the washroom at the end of this page, and came back when we had to work on the new sheets. If someone would please enlighten me on what went on during my absence and leave it in the comments below for everyone to view, that would be greatly appreciated.

Continuing on with the second half of class, we were given two sheets labeled "Dynamics-Vectors" which was for practice, and "Forces in Two Dimensions" which was to be handed in. We were to plot the vector of the plane's velocity on the graph provided.

• The questions asks that you first decide on a scale, in which case [1cm = 10m/s] was recommended. Also label the directions (north, south, etc.) but I bet you already knew that.
• The next step would be to take your protractor, starting at the origin, and place a line 30 degrees to the north of east direction.
• If you did this correctly to the scale recommended, you will have a 6cm line (because the velocity is 60 m/s) with an arrow at the end because it is a vector. Place your protractor on top to make sure it is aligned with the 30 degree mark.
• Next you were to add another vector, representing the velocity of the wind that "blows on the airplane with a speed of 8m/s going in the direction 75 degrees south of west in the same way." Again, line it up with your protractor to make sure it is accurate.
• The resultant line would be the line connecting the origin to the head of the wind vector.
• The last part was to answer the few questions on the back, which deals with the beautiful diagram you just created.

I assume this should be finished by tomorrow's class. A reminder to bring your own protractor to avoid the unlikely event of having to buy one as I did. If there's anything I missed, comment below!

Don't forget the test on Friday! Have a wonderful evening, the next scribe shall be justing.

DYNAMICS in miss k's class

well today in physics we had to hand in our lab graph which we did on friday plus we have a dynamics test friday so remember to study! today mrs.k forced us to work in our dynamic booklets on page 30 31 and 43 .since im such a nice guy ill post our force notes up here.our precious notes included Fa:friction between snow and sled
Fb:pull of person on sled
Fc:tension between sled and rope
Fd:pull of rope by person
Fe:pull of sled by person
Fd:friction between person and ground
oh yea the pages that should be completed for tomorrow are 30 31 and 43
and before i forget mrs.k wants us to bring a protractor to class tomorrow due to a assignment shes assigning us to do.

i proclaim the next scribe to be bobthebuildeder
lets see if he can fix it. =D

Friday, March 4th 2011

Last Friday, in the beginning of our physics class, we received our movie assignment back (the one called Newton's 1st Law by Paul Hewitt, where we had to write down seven physics facts that we liked.). Then we went over the free body diagrams in our book, we finished the questions on page 41 and 42 (note: Static means not moving, and if a ball is on an incline slope the normal force exerted from the surface the ball is on, would be perpindicular to the incline). Then we finished up the lab, and it may be handed in by next Monday. Keep up the good work!

The next scribe for next class would be the one and only ahmed rage!

March 3, 2011 - Force and Acceleration Lab

For today's class, we started off by doing the lab or experiment about force and acceleration. As we have learned yesterday from the video by Paul Hewitt about Newton's first law of motion, which states that "when no net external force is acting on an object it will either remain at rest or, if it is moving, it will continue to move in a straight line at constant velocity". We will have to apply what we've learned from recent lessons for this lab.

We started the lab by preparing the equipments needed such as laboratory cart, recording timer, carbon paper discs, pulley, large paper clip, washers, and heavy strings. After that we follow the procedures in the lab handout(if you don't have one, please ask Ms. K for a copy). Make a data table, record your results, sketch a graph for your results and I think we have to answer the Interpretation in the worksheet. Don't worry, Ms. K told us that we still have some class time to finish the lab for tomorrow.

Definition:

Tock - is the distance between two consecutive numbered dots represents one time interval.

Things to remember:

          1. Test the sys. to see if you have offset friction. (Hint: put enough washers on big paperclip to offset friction)

          2. Label 5 tapes as 50g, 100g, 150g, 200g and 250g. Tapes should measure 1.0 metre long.

          3.Data table 7 - 1 needs to be extend(1-16) for tape 1 and 2. This means you need more than 10 entries for 2 tapes.

I think that's all, the one who will scribe for tomorrow's class is Keinaan94.

Newton's 1st Law - Paul Hewitt and Free-Body Diagram for objects on an Inclined Surface.

Definition: For Today Class!

Newton First Law: The law that a particle not subjected to external forces remains at rest or moves with constant speed in a straight line.

Force: Push or Pull.

Inertia: The ability of an object to resist changes in its state of motion is a fundamental property of all matter

Weight: The force that gravity exerts on an object due to its mass [SI unit is the Newton]

Mass: the quantity of matter an object contains [SI unit is the kilogram]

Gravitational force: is an attraction between two objects because of their mass

Friction: A force opposing the relative motion of two objects that are in contact.

We started the class by watching video, the video that Mrs. K wants to show us last week. The title of the video is Newton’s 1^st law by Paul Hewitt. Our task for the class today is to understand the video and Write down 7 interesting that you learned in the video. The summary of the video are about Inertia, force, gravitational force, mass, weight, velocity, and acceleration. Also, from the video they talk about the homework last week on the book Pg.37 # 1. After we done watching video we continue to talk about the free –body diagram for objects on an inclined surface (page 17 # 7 & 8).

Mrs.K wants us to answer the FF.

Page 40 (#8,9,10) the one that we skipped last Monday because we did not study the object on an inclined surface.

Page 41 (#1-8)

Page 42 (#9&10)

Lastly Mrs. K said that be prepare for our First lab tomorrow. Read the worksheet that she gave to us (Force and Acceleration).

Have A Nice Evening Everyone :)

Next Scribe : Da5rkmatter

Dynamics: Some Types of Forces and Free-Body Diagrams

For today's class, we started the class by discussing the table found on page 36 and answering the questions related to Newton's second law of motion on pages 37 and 38. We later on discussed some types of forces (page 9) and free-body diagrams (pages 13-16).

Page 36: The table shows observations, predictions, assumptions, and diagrams of Galileo's Thought Experiment on Motion. The overall experiment states that an object will remain at rest or in uniform motion unless acted on by an external force.

Types of Forces:
a. Friction- contact force that acts to oppose sliding motion between surfaces.
b. Normal- contact force exerted by a surface on an object.
c. Spring- restoring force; the push or pull a spring exerts on an object.
d. Tension- pull exerted by a string, rope, or cable when attached to a body and pulled taut.
e. Thrust- forces that move objects such as rockets, planes, cars, and people.
f. Weight- long-ranged force due to gravitational attraction between 2 objects, generally earth and an object

Free- Body Diagrams:
What is a free-body diagram? A free- body diagram is a diagram that represents an object and all the forces acting on it. To learn how to draw free-body diagrams check pages 13 to 16. These pages provide strategies on how draw a free- body diagrams and some situations in which free- body diagrams can be drawn.

Ms. K then told us to answer pages 27 and 40. We later on checked our answers and then Ms. K assigned us to do pages 41 and 42 for homework. She also gave back our kinematics test.
*for pages 41 and 42- do not do the drawings with an inclined plane
*Also remember since it's staff meeting day, there will be no afternoon classes.

Next Scribe for Wednesday's class: Dwightlord

Dynamics: Four Fundamental Forces and Newton's Laws of Motion

Today's class; Friday, February 25, 2011

We started off the class by waiting for Ms. K to find a movie she was suppose to show us about Newton's Laws of Motion I believe. Unfortunately she was not able to find it so we went ahead and started on our next unit; Dynamics. We were given another ivory booklet labeled "Grade 11 Physics. Dynamics."

Our first task was to read from pages 3 to 7, with the headlines being; The Four Fundamental Forces, Newton's Laws of Motion and a brief summary of the 4 pages.

Ms K mentioned that we will only be focusing on The Gravitational Force and The Electromagnetic Force for this grade 11 course, and not so much of The Strong Nuclear Force and The Weak Nuclear Force.

All concepts read from pages 3 to 7 should have been able to help us finish page 39, "Chapter 5 Study Guide" which was our second task. We had approximately 10 to 15 minutes to finish this page and if we were finished, we were to start on pages 34 and 35, "Chapter 3: Newton's First Law - Inertia."

Once the clock hit Helium, says Ms. K (but was actually at Hydrogen) we corrected these 3 pages.

For homework, Ms. K assigned us to read page 36 and finish pages 37 and 38. She said this shouldn't be hard for us to finish so we should get it done.

One last thing, we did not get our tests back because there are still 2 more people who have to write the test on Monday.

Have a nice weekend! Next scribe will be chocnut

Today's Class

We have answered the review problems on the green text book on pages 60-61; 81 numbers 14,21,24 which is about solving for velocity, distance, graphing (rise/run) , displacement, getting areas on the graph (1/2 b h),(b x h) and acceleration. Also, we were given a worksheet about independent, dependent variables and graphing in which we handed it in at the end of the class. Mostly we just had a review for the unit test for this day so best of luck to everyone tomorrow.

I guess that's all, be sure to review :D:D:D gl.

Karla shall scribe next :>

What we did This day

These are the things we did in today's class:

• We answered the homework form last week which is pages 43 and 44 in the Kinematics booklet.
  
• Ms. K made us answer numbers four and five on page 44 on a separate sheet of paper. It was sort of confusing from my point of view but we managed to answer both. She tested us on what we know so far so that we'll be better prepared for the UPCOMING TEST ON THURSDAY (i think) about what we have learned so far about Kinematics.
• We worked on some practice questions in the green textbook and i think we are going to answer them tomorrow. Here are the questions:
• p60 # 14
• p61# 21-24 -----im not sure
  
• p82# 3
• p83# 8, 10 and 11
  
  
  
  
  VaNiLLa_iScream is the next scribe
  

February 18, 2011

At the beginning of class today, I sold one of my chocolates to a classmate of mine.

.. Oh, and Ms. K also helped us complete the study guide for chapters 3 and 4 in the textbook, as well as reminding us the formulas for acceleration, displacement of an accelerating object, and final velocity. She then gave us an insight on calculating the instanteous velocity of a position-time chart, using the "rise-over-run" formula, and were given practice sheets to work on together. By the end of class, we were assigned pages 43-44 in the kinematics booklet to finish by Tuesday. But because we have Monday off, feel free to procrastinate until then. Enjoy your long weekend everybody! :D Just kidding, don't procrastinate. But enjoy your weekends anyhow~

BRYAN SHALL BE THE NEXT SCRIBE~

February 17, 2011

What we did in class today:

Today, at the beginning of the class Ms. K introduced to us a motion sensor and showed us how to use it and what it does. This device was used to test our knowledge on position-time and velocity time graphs. Our other option rather than trying out this device was to continue on with our previous Practice questions on page 55 #13-19, in the green textbook. Lastly, we were able to grab a new worksheet Chapter 3 Study guide worksheet for practice. If you have any questions about the practice questions in textbook or Study Questions, we will be going through these tomorrow in class. Make sure to show up for class so you don't miss anything. :)

Ps. The next scribe is Jackson!

February 16, 2011

What we did in class today.

For half of the class we went over the answers for page 26 (Position Vs. Time graphs), page 28 (Velocity Vs. Time graphs), and page 39 and 40 (Properties of vectors) in our kinematics booklets. For the rest of the class we used the green textbook and read pages 54 and 55 then answered questions 13 - 19 on page 55. Most people did not finish so do not fret.

I assign Food (Karrina) to be the next scribe for tomorrow!

What We Did In Class Today

Today, we had a substitute teacher named Ms. Hall.

• At the beginning of class we went over the rest of pages 13 - 14.
• We read pages 15 - 18 and Ms. Hall kindly explained everything to us, giving examples and teaching it to us.
• We were assigned to do "Transparency 2-4" on page 25 - 26, "Transparency 3 - 1" page 27 - 28, and "Properties of Vectors" on page 39 - 40 in the Kinematics booklet.

That's pretty much all that we did in class today guys (:

Make sure that you do your work!

P.S. Nathaniel is the next scribe :D

February 14, 2011

What we did in class today ._.

• At the beginning of the class we got our assignments about jobs that involved physics handed back to us. We also handed in the assignment "Appendix 3.6: Describing Motion in Various Ways."
  
• After that we, turned to page 23 in the Grade 11 Physics Kinematics book and looked over vector subtraction. We then had some class time to do the 5 questions on page 24 related to vector subtraction which we went over right away.
  
• After that Ms. Kozoriz went over different types of graphs. On a distance - time graph, a parabola shows a change in velocity where as a straight line shoes a constant or linear motion. We also looked at the examples on page 34 to gain a better understanding of the concept. Then we did the questions on page 35 and went over them in class.
• Nearing the end of class, Ms. K told us that there was more information on page 16 and 17 about the graphs.
• Also we were told to do paged 13 and 14 (we corrected up to question 5)

If anyone forgot to pick up a Grade 11 Physics Formula Sheet, do so tomorrow.
Jenna will be the next scribe (:
Happy Valentines Day! <3

Average Speed, Average Velocity and Modes of representation

Hi, it is my first day of scribing in this class.. the class started with some sort of review with past lesson.. the Vectors and Scalars.. for the lesson for today we took up the average speed and average velocity which can be found in pages 6 and 7 of the booklet given to us.. after that we were given time to answer the questions on page 20.. moving on, we discussed the differences of the 4 modes of representation.. We were given a hand in assignment that will be given on Monday.. Have a great week ends.. :)

Transparency, Visual Mode, Numerical Mode, Graphical Mode, Symbolic Mode

The class started with reviewing what we learned about scalars and vectors from the previous day. Then we started talking about average speed and average velocity on page six of our kinematics booklet, then we did examples on page 19 to 22 that were related to the readings. Once we finished going over the examples we started discussing different modes of representation found on pages 8 - 11. They were visual, numerical, graphical and symbolic modes respectively. We were then given a worksheet titled "Appendix 3.6: Describing Motion in Various Ways" that will be handed in on Monday for marks. Then the bell rang. Be safe and have fun and remember to complete the worksheet for marks! Oh and the next scribe will be Ms K. I mean davidhuynh

Unit Conversion Corrections, Kinematics, Scalars and Time

We started off the class by correcting the Unit Conversion questions . We later received a new yellow booklet with the title of Kinematics. We were given examples of vectors and scalars on the first page and were later asked to do pages four to five. We later corrected those two pages as a group and were assigned pages 36-38 as homework, which is a cross-word and a wordsearch.

Scientific Notation, Significant Digits, and Unit Conversion

Hi everybody. I am scribing for Wednesday class. At the beginning of the lesson, we corrected the homework on scientific notation and significant digits. Later on, we talk about the unit conversion and Ms. K assigned the two pages worksheet in the booklet which is due tomorrow. Also a reminder for those people who haven't hand in their advertisement assignment must hand in tomorrow.

Scribe List

This is The Scribe List. Every possible scribe in our class is listed here. This list will be updated every day. If you see someone's name crossed off on this list then you CANNOT choose them as the scribe for the next class.

jbd(2) PAR Jennaamanda VaNiLLa_iScream ahmed rage dud

josephine817 mohamed bobthebuilder chocnut Megatron

Jaksen Meryll Food(2) Anonymous

This post can be quickly accessed from the [Links] list over there on the right hand sidebar. Check here before you choose a scribe for tomorrow's class when it is your turn to do so.

What is Physics?

What is physics

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