PHYSICS
Waves Unit Objectives
January 2011
Chapter 11: Pages 261 – 273, 274 – 276 (skip 11.4, 11.6, and 11.7)
Vocabulary:
amplitude
oscilliation
angular frequency
period
cycle
periodic motion
equilibrium position
simple harmonic motion (SHM)
frequency
simple pendulum
hertz
Equations:
1
k
1
1
a   2 x
f 
a x
E  mv 2  kx 2
  2f
F  kx
2
2
T
m
L
m
g
a   2 A cos t
2 
T  2
T  2
x  Acost v  Asin t
L
g
k

k
m
f 

1

2 2
k
m
T
1
m
 2
f
k
Objectives:
After studying this chapter, students should be able to:
 11.1.1 calculate period, amplitude, and frequency for an object undergoing simple harmonic motion
 11.1.2 apply Hooke’s law
 11.2.1 calculate the speed and acceleration of objects undergoing SHM
 11.2.2 calculate the energy of objects undergoing SHM
 11.3.1 find the angular frequency of an object undergoing SHM
 11.3.2 use the general equation for SHM
 11.5.1 find the length and period for simple pendulums
Chapter 21: Pages 447 – 496
Chapter 22: Pages 497 – 513
Chapter 23: Pages 514 – 527 (sections 1 – 4 only)
Vocabulary:
adiabatic bulk modulus
antinode
beats
beat frequency
boundary
decibel
Doppler effect
fundamental frequency
harmonics
intensity
intensity level
interference
linear density
longitudinal wave
mechanical waves
medium
node
normal modes
overtones
periodic
pitch
polarization
principle of superposition
resonance
sinusoidal wave
sound
standing wave
timbre
transverse wave
wavelength
wave speed
PHYSICS
Waves Unit Objectives
February 16
Equations:
v  f
v
restoring force factor
inertia factor
yx, t   Asin t  kx
v
T
v

B


v
RT
M
y1  y2  2 A cost sin kx

2L
,
n
for n  1,2,3,.......
f 

4L
,
n
for n  1,3,5,.......
p  BkAcost  kx
2
Y
v
v

n
v
,
2L
for n  1,2,3,.......
I
f  nf1
P
A
2
p
p
1
I
I  BkA2  max  max
f beat  f1  f 2
  10 log
I0
2
2 v 2 B
fS
fL

v  vL v  vS
Objectives:
After studying these chaptesr, students should be able to:
 21.2.1 relate wave speed, frequency, and wavelength
 21.2.2 find the amplitude of a wave
 21.3.1 relate the speed of a wave on a string or wire to its tension
 21.5.1 relate bulk modulus, frequency, wavelength, and density
 21.5.2 relate Young’s modulus, frequency, length, and density
 22.2.1 find the nodes and antinodes of standing waves
 22.3.1 relate frequency, wavelength, and harmonic number for standing waves with two fixed
ends
 22.3.2 relate frequency, wavelength, and harmonic number for standing waves with one
fixed end
 22.3.3 relate harmonic number and overtone number
 22.5.1 relate frequency, wavelength, and harmonic number for standing sound waves




23.1.1 relate pressure and intensity
23.1.2 relate frequency, speed, amplitude, and intensity
23.3.1 calculate beat frequency
23.4.1 apply the equation for the Doppler effect
Schedule: (subject to change)
Day 1: 11-1 to 11-3, 11-5
Day 2: 11-3
Day 3: lab
Day 4: work day
Day 5: 21-1 to 21-3
Day 6: 21-4 to 21-6
Day 7: work day
Day 8: 22-1 to 22-2
Day 9: 22-3 to 22-7
Day 10: work day
Day 11:
Day 12:
Day 13:
Day 14:
23-1 to 23-4
lab
work day
unit test