2004 - 2005 Syllabus
and Important
Stuff
the official time
test advice and the test
corrections policy
Walker physics website
AP
Physics and FAQ/practice AP
problems
North
Carolina Physics Curriculum
How Stuff Works! and How Things Work
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January 31 |
February 1 |
February 2 |
February 3 |
February 4 |
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see email for suggestion on how to do this on your calculator |
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also, i will used about 15 minutes of class time today, so i would strongly suggest that you have all checks through part 6 before coming to class today |
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(always done before class) |
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14(9): are the readings redundant? if so, which is better? be able to relate the precal math to the sounds we heard in class this morning |
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presentation |
find
the speed of the 2 standing wave harmonics in 14(61), BUT the
method for finding the speed of the fundamental must be different from
the method you use to find the speed of the second harmonic (of course, to be precise, I mean find the speed of the 2 traveling waves that compose the standing wave, because the standing wave itself has no speed) |
14(63) |
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homework (by 5 pm) |
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14(64) as always standing wave pictures are required for each frequency used |
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(checks only during class) |
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lab C6 continues (checks are only given in class and after school today until 5:45 pm) |
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January 24 |
January 25 |
January 26 |
January 27 |
January 28 |
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bring gloves (or a sock)! |
19 (electric fields & forces), 20 (electric energy), 22 (magnetic fields and forces) & TWTW |
finish
lab C4 (I may collect them today) also bring applet to class so that we can finish grading it |
(you should first come up with an equation that predicts the number of antinodes on the string in terms of the 4 independent variables that you can change) |
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(always done before class) |
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be able to define resonance and describe a practical example that you have experienced (perhaps TWTW will give you ideas) |
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presentation |
none |
14(5) |
14(75) hint: first calculate the wavelength of the standing wave |
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homework (by 5 pm) |
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(the vibrator was oscillating at 60. Hz; there were 4 antinodes on a string of length 1.75 m; there was 0.30 kg of mass hanging from the string; a 6.85-length of string has a mass of 0.008 kg) |
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read the rest of the lab so that you know what you'll be doing |
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due (since i wasnt in on friday) deadline for bulletin board problems in 6 pm |
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January 17 |
January 18 |
January 19 |
January 20 |
January 21 |
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both exercises 1 and 2 brought to class |
you should also know what the power should have been from the reading |
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(always done before class) |
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and studied the conservation of energy problems particularly in section pp. 206-207 & 215-216 and 13(5) |
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which relates to today's lab C3 |
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presentation |
6(58) |
13(41) assume the spring is horizontal and on a frictionless table |
13(61) |
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homework (by 5 pm) |
6(25) requires a force diagram for part (a) and a different one for part (b); assume that 6(25) is a horizontal spring [in fact, always assume horizontal, unless the problem states or implies vertical] |
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suppose that someone compresses a vertically oriented spring by 0.03 m by pushing down on a mass of 2.0 kg that is on top of the spring (what I mean here is that the spring is now compressed just 0.03 m from unstretched, NOT from equilibrium); the person lets go of the mass; a) what is the maximum height reached (compared to its starting point) use a spring constant of k = 2500 N/m (which would be like that of a car spring) b) what was the maximum speed (and when did it happen?) |
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test
correction meetings due for 1st half of the circuits test |
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waquiz solutionsdue by 5 pm Friday: problem 1: finding ABCD from the mass, spring constant, amplitude, and one (x,t) ordered pair problem 2: problem 13(32); it would be best - but not necessary - to find the solutions both ways (calculus and physics) if you can due by 5 pm today |
test corrections due for 1st half of 2nd test |
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January 10 |
January 11 |
January 12 |
January 13 |
January 14 |
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GREEN book prelab due before coming to class you will finish part I in class today |
today you start part II of the lab |
start part III |
finish part III |
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(always done before class) |
also TWTW pp. 300-301 TWTW, revised edition, pp. 280-281 |
p. 391 |
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13(5) |
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presentation |
22(18) |
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homework (by 5 pm) |
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a force diagram, net force equation is (of course) required for both problems |
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due |
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January 3 |
January 4 |
January 5 |
January 6 |
January 7 |
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do they attract or repel? what makes a magnetic field? what's affected by a magnetic field what are the important features of the magnetic force? |
both
labs this week DON'T use a lab book, so you wont need them based on reading below, make sure you know 1) conditions required for circular motion 2) can the magnetic field increase a charged particle's speed? (like the gravity field or the electric field could) why or why not? |
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(always done before class) |
22(1): what kinds of magnets exist (what are the causes of magnetic fields?) look at the following figures -- section 22(6) -- (and read the captions!) fig 22-19, fig 22-20, fig 22-25, fig 22-27 and the "magnetic field right hand rule" (4 lines of text on page 730) otherwise you may have a lot of reading/work for tomorrow |
+ stuff in monday's slot <------- |
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+ reading on magnetic stuff in TWTW (see syllabus) |
| in-class
presentation |
none |
question
(NOT problem) 22(5) [you might want to do this as a ratio problem] |
22(20) |
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homework (by 5 pm) |
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(PINK half-page handout) |
you will want to find both the magnitude and direction of the acceleration (don't forget to follow the usual "force problem procedure" you also will want to clearly show the directions of the velocity, the B field, and the force, in addition to telling what type of view you have drawn |
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1 and 2 (ivory sheet handout from wednesday) |
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on the magnetic field associated with a current-carrying wire |
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