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Monday,
February 26
other
 amnesty hours: 1 am - 1:30 pm

missing a lab score?
need an updated lab score?
(we overlooked something the first time
or you provided additional information?)

you must come IN PERSON with the
appropriate lab book

(no scores appear in your books for D2, D3, D6,
as we gave everyone a perfect score)


 

 
Monday,
February 19
Tuesday,
February 20
Wednesday,
February 21
Thursday,
February 22
Friday,
February 23
class
 
 block A:
bring a musical instrument to class
(that you can play at least a couple notes on)
 block G:
bring a musical instrument to class (that you can play at least a couple notes on)
 
 final exam

check the final exam schedule so that you know where the rooms are
what we'll do
in class
lab C6
continues
lab C6 ends
lab C6 ends
for block G; we will spend 20 minutes on musical instruments; 10 minutes on nodes and antinodes in percussion instruments; you get the other 20 minutes to finish (and get checks for lab C6)

lab C6 pretty much ended yesterday for block A; tomorrow is last chance for checks in class
(but you must have finished today)


reading
(always done
before class)
 
 
14(5) on interference 
 
 
in-class
presentation
14(63)



written
homework
(by 5 pm)
14(71 and be sure to include a labeled-diagram -- see friday's note above of the beats)
and 8(77)

make sure that the following "formulas" NEVER appear on a homework or the final exam friday:
wavelength = 2L/n
f = v/(2L) or some variant thereof

the only formulas, that may appear in a chapter 14 problem are v = f x wavelength
(v = f  l)
and

v = (T/m )1/2
 

 
 
lab
 
 
 
 
 
other
 

 
 

 
Monday,
February 12
Tuesday,
February 13
Wednesday,
February 14
Thursday,
February 15
Friday,
February 16
class
 
 we start a 5-day lab )in the GREEN book) on sound and music....
if you are missing class later in the week, please choose a partner who is also missing class
you are expected to have
parts 1 and 2C,D done by the beginning of today's class
if you are in block A

and parts 1 and 2C done at the beginning of today's class if you are in block G
make an extra effort to be on time for class today; since I wont be here, someone else is reading attendance and they could take it right at the beginning and then disappear


prelab to part 3 (that's both A and B) of
lab C6
must be done -- in the labbook -- before class today...
we will grade it first thing
ditto the comment about attendance yesterday

ab C6 continues

the planner is in the cubbyhole of the fron desk if you havent signed recently
what we'll do
in class

block A (and some of block G) needs to figure out which way the air vibrates in a resonating pop bottle (with a standing wave)

the answer was explained to you in last week's reading, but it's also in tomorrow's reading


continue with lab C6




reading
(always done
before class)
 14(8 up to example 14-9 on page 461)
14(4) on the basics of sound
14(9) on beats

know the precal of adding two sinusoidal waves

Contemporary Precalculus through Applications, 2nd ed
(the NCCSM precal book) pp.  424-425
 
 
 14(5) on the decibel scale
in-class
presentation
14(58)

14(59a)

14(86)
written
homework
(by 5 pm)
14(61, 12)
 
14(88) and for the 2nd problem, find the fundamental frequency of the longer string in problem 14(69)
 
 14(64,  70)
for 70, include a diagram of the wave shape that covers 1 second of time..... label your diagram with the beat period, the period of the pitch you hear, axes labels, etc

monday, show and tell: 14(63)

homework for monday:


lab
 you're writing up labs C3/C4 so that you can turn them in wednesday
 
C3/C4 due by 5 pm 
 
 
other
 

 
 

   
 
Monday,
February 5
Tuesday,
February 6
Wednesday,
February 7
Thursday,
February 8
Friday,
February 9
class
 BRING YOUR OWN example (with real objects) of resonance to class and be able to demonstate it to the rest of the class
 short classes
for G


block A is bringing gloves or an equivalent
block G is bringing gloves or an equivalent
 
lab C4 prelab done and data table
spread over 2 facing pages BEFORE coming to class

lab C4 in RED book for both classes

bring gloves!

if you are missing class, you will want to have this done before today, because results will be due monday; you will need at least one partner
what we'll do
in class
you will be expected to describe the resonance phenomenon in words

ditto for damping

block G will also explain why the gravitational energy of a spring [ m g L (1 - cos q] turns into a new formula that looks remarkably like the spring energy formula
[1/2 k Dx2]
when  q  is small

block A has to finish up problem 13(69) that we didnt quite finish at the end of class friday to find the fraction of a period that a pendulum spends between "A" and "A/2"

"waves on a spring" lab for block A

we still havent done "damping"
(section 7 of chapter 13, so be ready to do that) also

lab C3 for block A in RED book


lab C3 for block G in RED book





lab C4 prelab done and data table
spread over 2 facing pages BEFORE coming to class
reading
(always done
before class)
13(7-8)
(this finishes all of chapter 13)
14(1-2)
know the different types of waves;

know the properties of waves;

know what can happen to a pulse traveling along a wave

know how a speaker works:

TWTW
pp. 240-241

p. 228 in NEW edition

speaker-in-action applet
14(7, first page only)

does a vertical spring have spring energy when it's at rest at equilibrium?
check this spring applet!


14(8 up to mid-page 457)

in-class
presentation
read problem 8(24)

do problem 8(25 part c  ONLY)
does the answer depend on the mass of the

bring results of superposition of waves applet   (exercise set  #1) on paper to class
(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 class
(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)

prelab to lab C4
written
homework
(by 5 pm)
part IV of the
spring lab C2

yes, you will be turning in the lab book today and we will be grading parts III and IV
 
these are  challenging!

13(47)

the first part of this problem is an inelastic collision! remember those?  what physics principle applies?
(assume that it's a horizontal spring)

13(21)
 
 13(74 parts b and c ONLY)

you can check your answers with this spring applet

14(5)
lab
 see above
 lab C3 for block A in RED book
 lab C3 for block G in RED book
 
lab C4  will be done in both classes

finish lab C3
other
 even answers to chapter 13 are posted on the bulletin board outside of the classroom

test answers are posted; you can talk about the test of last week
even answers to chapter 14 are posted on the bulletin board outside of the classroom
 
 

 
 
Monday,
January 29
Tuesday,
January 30
Wednesday,
January 31
Thursday,
February 1
Friday,
February 2
class
 
test for block A mainly on
Chapters 19, 20, 22
but on anything covering electric and magnetic fields, forces, and energy

 
test for block G mainly on
Chapters 19, 20, 22
but on anything covering electric and magnetic fields, forces, and energy

what we'll do
in class

block A: test
A: last day on spring lab;
you should be finished with part III by friday
block A does
conservation of energy

block G does new reading on pendulums:
do you see evidence for the three things that go together:
simple harmonic motion;
a restoring force
(F = - k times displacement from unstretched);
an energy that depends on displacement squared?

block A does new reading on pendulums:
do you see evidence for the three things that go together:
simple harmonic motion;
a restoring force
(F = - k times displacement from unstretched);
an energy that depends on displacement squared?
reading
(always done
before class)
 
 block G: 13(5)
(doesn't this mean you have read the previous 4 sections??)
blocks A and G: 13(3) 
block G: 13(6) on pendulums 

block A: 13(5)
(doesn't this mean you have read the previous 4 sections??)
block A: 13(6) on pendulums 
in-class
presentation


G: 13(35)
G: 13(14)
A: 13(35)
A: 13(14)

written
homework
(by 5 pm)

 


 13(44a, 45)
block G.... you might want to do this early in the week, so it doesnt interfere with your test-studying
lab
 
 
springs are in my office, just inside my door, under the light switch
 G: finish spring lab
through part III
A: finish spring lab
through part III
other
 

 
 

  

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