2007 - 2008 Syllabus
and Course
Expectations the official
time
Honesty
Safety Late policies
Walker physics website
AP
Physics and AP Physics FAQ
(should I take the AP?)
North
Carolina Physics Curriculum
How Stuff Works! and How Things Work
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May 26 |
May 27 |
May 28 |
May 29 |
May 30 |
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it's Memorial day |
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ditto |
bring a musical instrument to class today |
finals begin |
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we'll do in class |
begin
sound and music lab finish parts 1, 2, 5 |
sound
& music lab continues finish parts 5, 4 and perhaps some of 6 what we learned yesterday? a) what happens as we go up the musical scale? b) how the frequency of a note differs from that of an octave above and an octave below c) how the frequencies of two successive notes relate to each other |
sound
& music lab continues\ finish the rest of 6 and 8 |
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(always done before class) |
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14(4) |
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(you've already read the part about stanidng waves on strings) |
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| what
we should prepare for class today |
do
prelab to part 3 by adding 2 sine waves (one of frequency 15 s-1 and one of frequency 18 s-1) on your calculator (and then put in your lab book) before class today... we think you learned this in precal! see also my bulletin board (where I go through step-by-step addition of a frequency = 9 s-1 and frequency 11 s-1 and interpret the sine wave addition for you) ALSO, if you have a chance, think about what function fits the twelve semitone frequencies of your octave (from part 5): what are the first two things you should ask about two successive frequency numbers? |
suppose you have an open tube and a closed draw the standing wave pattern in each for the fundamental tone (the lowest frequency) in your lab book also write the relationship between the wavelength of your standing wave and the length of the tube for both the open tube and the closed tube (this is exactly analogous to what we did with standing waves on strings last week in lab C4) |
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homework (by 5 pm) |
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14(5, 12, 58, 59a, 61, 63, 64, 69, 70, 86) and which we would have done had there been one more week of class |
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May 19 |
May 20 |
May 21 |
May 22 |
May 23 |
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bring a
flash drive have printing privileges bring spring lab book to class |
bring a physical example of resonance to class; be able to demonstrate resonance with it wear lab clothles; wear clothes you are comfortable on the floor with; bring glove or sock |
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| what
we'll do in class |
gold test is graded and will be handed back |
I will likely give you time for part III of the spring lab in class today; bring your lab books! |
share
examples of resonance that students bring to class (but also be able to describe the resonance phenomenon in simple language) know what wavelength, frequency, speed of a wave mean know the difference between a longitudinal and transverse wave what's superposition, what's interference? |
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(always done before class) |
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13(5) |
for pendulums, look for and identify the same features we learned about for springs, since they also show SHM |
and 14(1, 2 and the first page of 7) |
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| in-class
presentation |
spring
lab C2 must be completed through part II before class with all checks |
bring results of superposition of waves applet (exercise set #1) on paper (to hand in) to class with you (if you don't have it I will have to ask yo to leave class to go do it, and you will miss the lab and have to make it up on your own) |
bring results of superposition of waves applet (exercise set #2) on paper (to hand in) to class with you (if you don't have it I will have to ask yo to leave class to go do it, and you will miss the lab and have to make it up on your own) lab C4 prelab done and data table spread over 2 facing pages BEFORE coming to class (or before you start lab) |
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homework (by 5 pm) |
13(35) is straightforward, but for 13(14), you will have to start with the basic equation of simple harmonic motion, which in this class will be delta-x = A sin (Bt + C) + D (hopefully you have some familiarity with this equation from precal or cal) in problem 14, you will need to take the given stuff and solve (and match) for A, B, C, and D |
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13(21 and 47), both of which are challenging under NO circumstances may you ever use equations 13-2,4,6,7,8,9 !! people who know calculus can get to these from the general equation for delta-x (see Monday's slot), but they must always start with that equation for delta-x |
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and handed in before you leave |
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you'll finish only if you have printing privileges, a flash drive, and have read part III in advance |
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if you are missing today, you must do the lab before you leave; this lab requires a minimum of 4 people per group and don't forget to bring gloves |
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May 12 |
May 13 |
May 14 |
May 15 |
May 16 |
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(The Way Things Work)? if you missed class today, make sure that you come pick up both your lab books (the lab D5 quiz that you turned in last week has been regraded!) since many people do not seem to understand what it means to obey Ohm's law, re-read section 21(2).... I would not advise starting the test tomorrow without understanding it many people still do not understand why we did not use small resistors in the D4 Ohm's law lab (or at least showed no inclination to use physics as part of their explanation...);. if that applies to you, study the D5 answers carefully |
if you are MISSING the test today, please make arrangements with me IN PERSON after school on MONDAY (as in May 13) from 4:10 - 4:45 pm |
test if you are MISSING the test today, please make arrangements with me IN PERSON after school on MONDAY (as in May 13) from 4:10 - 4:45 pm |
spring lab if you are missing class, you MUST turn in the prelab to spring lab C2 TODAY before class starts lab C2 goes in the D4/D6/D7 lab book; NO EXCEPTIONS (you will be handing in ths D2/D3/D5 lab book in yesterday) if you are missing class, you are also expected to finish part A of the lab BEFORE the start of class tomorrow.... find a partner who is missing the same classes as you are if you are NOT missing class today or tomorrow, please do NOT choose a partner who is missing class either today or tomorrow |
printing privileges will be useful today so will a FLASH DRIVE! |
| what
we'll do in class |
finish
magnetic force & build a motor |
test
on circuits (could have lab portion) |
test
on circuits (could have lab portion) |
spring
lab C2 starts; prelab due in class (or in the black box if you are missing class) |
spring
lab continues if you didn't finish part I yesterday and get all the checks, please finish at home last night; we will only give part I checks during the first few minutes of class today |
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(always done before class) |
review the velocity selector (p. 740); you should have drawn the force diagram for the particle described in conceptual checkpoint 22-3 before coming to class also review the mass spectrometer in example 22-3 new material: Motors and Generators: Walker 23(6 but dont worry about the equations) TWTW 300-301, 304-305 TWTW new editon 280-281, 284-285 be able to list the things necessary to make a motor; list the things necessary to have a generator; how are a motor and a generator related to each other)? |
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pp. 152-154 for the prelab 13(1) and 13(4, just page 405) for part I (the part we do in class today) |
if you know calculus, you will have an easier time of understanding where they got the formulas for velocity and acceleration from if you don't know calculus , it will be harder (but still possible) to follow! |
| in-class
presentation |
no
presentation monday since we have a short class |
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homework (by 5 pm) |
follow the usual force diagram procedure (Walker does a similar problem on pp. 741-743, but he does not do very well at following OUR established procedure -- get out those guides to force-diagram problems! -- I'm sure you will do much better!) for challenge 1 and some of the later challenges, you will need to have access to the Charged Particle software because it shows you time, tells you if your solution is correct, allows you to make measurements, etc. (you can do most of challenge 1, however, without the software, and I encourage you to do so) Charged Particles users guide including how to install the software |
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7 and 8 due by 10 pm! black box outside the physics hallway if the floor is locked |
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however. you could practice your magnetic field knowledge by doing challenges 7 and 8 monday's homework 13(14, 35) 13(35) is straightforward, but for 13(14), you will have to start with the basic equation of simple harmonic motion, which in this class will be position = A sin (Bt + C) + D (hopefully you have some familiarity with this equation from precal or cal) in problem 14, you will need to take the given stuff and solve (and match) for A, B, C, and D |
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(until 5:30 pm) if you have two checks, you should have signed the CREDIT sheet |
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D2/D3/D5 lab book |
spring lab C2 begins in the D4/D6/D7 lab book |
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dc motor practice circuit problems: 21( 6, 13, 33, 23, 38, 76) for 21(43/44): label all unique currents; write all loop rules and junction rules |
have you picked up your copy of
TWTW? |
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May 5 |
May 6 |
May 7 |
May 8 |
May 9 |
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we decide when the circuits test is in class |
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we'll do in class |
(D7 asks you to build, calculate, and measure everything -- all currents, all voltage changes -- in 4 different circuits.... for the first time ever, we are dropping 2 of these circuits (we are dropping a) the one with 3 resistors in series & b) the one with 3 resistors in parallel) and expecting you to do only the OTHER two |
lab D7 (only the 2 circuits described to the left <----- are required, but you can do the others for practice, once you ) for today's class, you must BRING TO CLASS THE FOLLOWING for AT LEAST ONE of the two circuits described above: (before doing this you and partner should agree on which circuit you are going to do first, and also agree on the exact layout of the circuit; i.e., where is R1? where is R2? where is R3?.... and of course have measured the values of R1, R2, R3) in your lab book (same as D6), label and draw the direction of the currents (using mnemonic symbols), and then write down the a) loop rules b) junction rule(s) c) ohm's laws for that circuit for one of these two circuits, you should be able to calculate numbers for everything (all currents, all voltage differences across all devices) assuming that you know (because you measured your 3 resistor values)..... assume that you are going to find a battery that has voltage difference of 1.5 v (the one you actually use might be slightly lower or higher, but that shouldnt affect your calculations that much) for the OTHER circuit, you will not be able to calculate numerical values of anything, because each equation (loop rules, junction rules, ohm's laws)..... so it would be better if you do the other circuit .... the work service students will help you with the other circuit tomorrow all of the above (including numerical calculations) should be brought to class today!! so that you can use the block for measuring (and getting checks) |
we do lab D9 (but no need to read it first) in both blocks at this point, I am not going to change plans, so the people who are missing because of an AP exam, are just going to have to attend another class that is doing this lab the lab will ONLY be done during regular block classes there will be no make-ups, because it is a group activity if you miss G this morning, it is YOUR responsibility to find another block to go to when that lab is being done.... I hope you can come to my F block this afternoon, but if not: the lab is being done in ALL blocks today EXCEPT for block C, where it is being done tomorrow.... in block D today, it is being done ONLY in the first half of the block, immediately after lunch if you do not attend a lab session, you will get a zero on the lab AND you will not have that knowledge which will be tested on future exams/finals, so it is very important that you find a block that you have free |
we do lab D8 read the first two pages more reading below DON'T WEAR FANCY CLOTHLES TO LAB wear something comfortable and loose fitting.... you will have to sit or kneel on the floor also, bring knee pads (or pews)! |
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(always done before class) |
junction rule (p. 711) loop rule (p. 711 - 713) EXCEPT you may NOT write a loop rule that involves going against the current direction (like the book unfortunately does in equation 21-13) |
& 24(1) on how DVD works |
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on how to find the direction of the magnetic force |
22(8) know how ferromagnets work & 22(3) (test postponed till next week) physics of cyclotrons dc motor |
| in-class
presentation |
D6
must be done by the beginning of class (I think that effectively means it must be done this weekend); no more D6 checks after the first 3 minutes of monday class also, part C of lab D6 (done in the DS6 book) find the equivalent resistances of the 4 different resistor combinations in terms of R (the resistance value of the single resistor); you will not be measuring the resistance combinations nor the individual resistances you do NOT pick out resistances to do part C !! |
see above for what you should bring to class concerning D7 |
what are the five most important things we learned in lab yesterday? |
salmon half-sheets on finding the force and field for all pictures shown |
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homework (by 5 pm) |
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you should always write the following in order: a) the loop rules (aka conservation of energy or the once-around-the-ciruit rule) b) the junction rules (aka conservation of energy) c) Ohm's laws solve for things numerically as they become available in the equations do NOT CRAM !!!! at least 1/3 of EACH page should be blank to allow for future additions/corrections |
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we are NOT doing checks; we will grade this after you turn it in |
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April 28 |
April 29 |
April 30 |
May 1 |
May 2 |
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we're probably odd today in both classes, so whoever comes last probably gets to work alone be thinking about when you want to have the fields/forces/energy test (this friday or next friday) |
you MUST
bring your OTHER lab (the one not containing D4/D6) for
today's test |
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(chapters 19 and 20) |
what we'll do in class |
quizlet (= a minor minor quiz) covering anything related to labs D2 - D4 and the associated reading |
we start lab D6 with new partners |
practical
circuits test (covers anything lab-ish, including circuit building and measuring plus all associated reading (you may use textbook, notes, lab books, and green circuit guide, BUT the more time you have to spend looking up things, the less time you will have to do the test) a hard copy of the extra reading on resistance and resistivity (monday's reading) will be available for the test today |
lab D6 continues and ends? |
block G will have lab D6 (or D7) for 30 minutes before the test starts block F will start with the test (so come a few minutes early if you can) and then continue with lab don't forget to bring your D6/D7 lab books |
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(always done before class) |
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see Syllabus section 21(3) from Walker |
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| in-class
presentation |
please
finish part A of lab D6 BEFORE coming to class today (except for the measurement part) |
please
try to finish part B of lab D6 BEFORE coming to class today (except for the measurement part) |
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homework (by 5 pm) |
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with a conclusion written for each? |
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the lab will be due at 5 pm next tuesday you will need to finish this under the same "test situation" that you were in last wednesday (i.e., you may not seek another person's help... you may use the same stuff available last wednesday) you will have to finish the remainder on the hall, and you will also have to request a copy of the gray instruction sheet that you used last wednesday (and hand-return it to the person who gave it to you) don't forget to sign an honor pledge for this portion of the test |
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-- and when and where to use them -- since we started chapter 19 (I think that there are only 5! 2 from chapter 19 2 from chapter 20 1 from chapter 21) |
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