2nd Semester Review

1
2nd Semester Review
2
A mass attached to a spring vibrates back and
forth. At maximum displacement, the spring force
and thea. velocity reach a maximum. b. velocity
reach zero. c. acceleration reach a
maximum.d. acceleration reach zero.
3
A mass attached to a spring vibrates back and
forth. At maximum displacement, the spring force
and thea. velocity reach a maximum. b. velocity
reach zero. c. acceleration reach a
maximum.d. acceleration reach zero.
4
Which of the following is the time it takes to
complete a cycle of motion?a. amplitude b. perio
d c. frequencyd. revolution
5
Which of the following is the time it takes to
complete a cycle of motion?a. amplitude b. perio
d c. frequencyd. revolution
6
A musical tone sounded on a piano has a
frequency of 410 Hz and a wavelength of 0.80 m.
What is the speed of the sound wave?a. 170
m/s c. 330 m/sb. 240 m/s d. 590 m/s
7
A musical tone sounded on a piano has a
frequency of 410 Hz and a wavelength of 0.80 m.
What is the speed of the sound wave?a. 170
m/s c. 330 m/sb. 240 m/s d. 590 m/s
8
A student sends a pulse traveling on a taut rope
with one end attached to a post. What will the
student observe?a. The pulse will not be
reflected if the rope is free to slide up and
down on the post.b. The pulse will be reflected
and inverted if the rope is free to slide up and
down on the post.c. The pulse will be reflected
and inverted if the rope is fixed to the
post.d. The pulse will not be inverted if the
rope is fixed to the post.
9
A student sends a pulse traveling on a taut rope
with one end attached to a post. What will the
student observe?a. The pulse will not be
reflected if the rope is free to slide up and
down on the post.b. The pulse will be reflected
and inverted if the rope is free to slide up and
down on the post.c. The pulse will be reflected
and inverted if the rope is fixed to the
post.d. The pulse will not be inverted if the
rope is fixed to the post.
10
How high or low we perceive a sound to be,
depending on the frequency of the sound wave, is
defined as thea. infrasonic wave. b. frequency.
c. ultrasonic wave.d. pitch.
11
How high or low we perceive a sound to be,
depending on the frequency of the sound wave, is
defined as thea. infrasonic wave. b. frequency.
c. ultrasonic wave.d. pitch.
12
The Doppler effect occurs witha. only sound
waves. b. only compressional waves c. only
water waves.b. only compressional waves. d. all
waves.
13
The Doppler effect occurs witha. only sound
waves. b. only compressional waves c. only
water waves.b. only compressional waves. d. all
waves.
14
The effects of sound on the ear are loudness,
pitch, and quality. Loudness is an effect of
____, pitch is an effect of ____, and timbre is
an effect of ____.a. intensity harmonic
content frequency b. harmonic content
frequency intensityc. frequency intensity
harmonic contentd. intensity frequency
harmonic content
15
The effects of sound on the ear are loudness,
pitch, and quality. Loudness is an effect of
____, pitch is an effect of ____, and timbre is
an effect of ____.a. intensity harmonic
content frequency b. harmonic content
frequency intensityc. frequency intensity
harmonic contentd. intensity frequency
harmonic content
16
What phenomenon is created by two tuning forks
side by side that emit frequencies that differ by
only a small amount?a. resonance b. interference
c. the Doppler effectd. beats
17
What phenomenon is created by two tuning forks
side by side that emit frequencies that differ by
only a small amount?a. resonance b. interference
c. the Doppler effectd. beats
18
If you know the wavelength of any form of
electromagnetic radiation, you can determine its
frequency becausea. all wavelengths travel at
the same speed.b. the speed of light varies for
each form.c. wavelength and frequency are
equal.d. the speed of light increases as
wavelength increases.
19
If you know the wavelength of any form of
electromagnetic radiation, you can determine its
frequency becausea. all wavelengths travel at
the same speed.b. the speed of light varies for
each form.c. wavelength and frequency are
equal.d. the speed of light increases as
wavelength increases.
20
If you are reading a book and you move twice as
far away from the light source, how does the
brightness at the new distance compare with that
at the old distance? It isa. one-eighth
b. one-fourth c. one-half d. twice
21
If you are reading a book and you move twice as
far away from the light source, how does the
brightness at the new distance compare with that
at the old distance? It isa. one-eighth
b. one-fourth c. one-half d. twice
22
In the diagram above, the image of object B would
bea. virtual, enlarged, and inverted. b. real,
enlarged, and upright. c. virtual, reduced, and
upright.d. virtual, enlarged, and upright.
23
In the diagram above, the image of object B would
bea. virtual, enlarged, and inverted. b. real,
enlarged, and upright. c. virtual, reduced, and
upright.d. virtual, enlarged, and upright.
24
In the diagram above, the image of object B would
bea. real, reduced, and upright. b. virtual,
enlarged, and upright. c. virtual, reduced,
and inverted.d. virtual, reduced, and upright.
25
In the diagram above, the image of object B would
bea. real, reduced, and upright. b. virtual,
enlarged, and upright. c. virtual, reduced,
and inverted.d. virtual, reduced, and upright.
26
Refraction is the term for the bending of a wave
disturbance as it passes at an angle from one
____ into another.a. glass c. areab. medium d.
boundary
27
Refraction is the term for the bending of a wave
disturbance as it passes at an angle from one
____ into another.a. glass c. areab. medium d.
boundary
28
When a light ray passes from water (n 1.333)
into diamond (n 2.419) at an angle of 45, its
path isa. bent toward the normal. b. bent away
from the normal.c. parallel to the
normal.d. not bent.
29
When a light ray passes from water (n 1.333)
into diamond (n 2.419) at an angle of 45, its
path isa. bent toward the normal. b. bent away
from the normal.c. parallel to the
normal.d. not bent.
30
A beam of light in air is incident at an angle of
35 to the surface of a rectangular block of
clear plastic (n 1.49). What is the angle of
refraction?a. 42 b. 55c. 23 d. 59
31
A beam of light in air is incident at an angle of
35 to the surface of a rectangular block of
clear plastic (n 1.49). What is the angle of
refraction?a. 42 b. 55c. 23 d. 59
32
Which of the following describes what will happen
to a light ray incident on a glass-to-air
boundary at greater than the critical
angle?a. total reflection b. total
transmission c. partial reflection, partial
transmissiond. partial reflection, total
transmission
33
Which of the following describes what will happen
to a light ray incident on a glass-to-air
boundary at greater than the critical
angle?a. total reflection b. total
transmission c. partial reflection, partial
transmissiond. partial reflection, total
transmission
34
Interference effects observed in the early 1800s
were instrumental in supporting a concept of the
existence of which property of light?a. polarizat
ion b. particle nature c. wave
natured. electromagnetic character
35
Interference effects observed in the early 1800s
were instrumental in supporting a concept of the
existence of which property of light?a. polarizat
ion b. particle nature c. wave
natured. electromagnetic character
36
For stable interference to occur, the phase
difference must bea. V/C.b. c?. c. 1/2
?.d. constant.
37
For stable interference to occur, the phase
difference must bea. V/C.b. c?. c. 1/2
?.d. constant.
38
At the first dark band in a single-slit
diffraction pattern, the path lengths of selected
pairs of wavelets differ bya. one
wavelength. b. more than one wavelength.
c. one-half wavelength.d. less than half of one
wavelength.
39
At the first dark band in a single-slit
diffraction pattern, the path lengths of selected
pairs of wavelets differ bya. one
wavelength. b. more than one wavelength.
c. one-half wavelength.d. less than half of one
wavelength.
40
Which of the following is a device that produces
an intense, nearly parallel beam of coherent
light?a. spectroscope b. telescope.
c. laserd. diffraction grating
41
Which of the following is a device that produces
an intense, nearly parallel beam of coherent
light?a. spectroscope b. telescope.
c. laserd. diffraction grating
42
A repelling force occurs between two charged
objects whena. charges are of unlike
signs.b. charges are of like signs. c. charges
are of equal magnitude.d. charges are of unequal
magnitude.
43
A repelling force occurs between two charged
objects whena. charges are of unlike
signs.b. charges are of like signs. c. charges
are of equal magnitude.d. charges are of unequal
magnitude.
44
Which sentence best characterizes electric
conductors?a. They have low mass
density.b. They have high tensile
strengthc. They have electric charges that move
freely.d. They are poor heat conductors.
45
Which sentence best characterizes electric
conductors?a. They have low mass
density.b. They have high tensile
strengthc. They have electric charges that move
freely.d. They are poor heat conductors.
46
Which of the following is NOT true for BOTH
gravitational and electric forces?a. The inverse
square distance law applies.b. Forces are
conservative.c. Potential energy is a function
of distance of separation.d. Forces are either
attractive or repulsive.
47
Which of the following is NOT true for BOTH
gravitational and electric forces?a. The inverse
square distance law applies.b. Forces are
conservative.c. Potential energy is a function
of distance of separation.d. Forces are either
attractive or repulsive.
48
If a conductor is in electrostatic equilibrium,
the electric field inside the conductora. is
directed inward. b. is directed outward. c. is
at its maximum level.d. is zero.
49
If a conductor is in electrostatic equilibrium,
the electric field inside the conductora. is
directed inward. b. is directed outward. c. is
at its maximum level.d. is zero.
50
Two positive point charges are initially
separated by a distance of 2 cm. If their
separation is increased to 6 cm, the resultant
electrical potential energy is equal to what
factor times the initial electrical potential
energy?a. 3 b. 9 c. 1/3d. 1/9
51
Two positive point charges are initially
separated by a distance of 2 cm. If their
separation is increased to 6 cm, the resultant
electrical potential energy is equal to what
factor times the initial electrical potential
energy?a. 3 b. 9 c. 1/3d. 1/9
52
A uniform electric field with a magnitude of 500
N/C is directed parallel to the positive x-axis.
If the potential at x 5 m is 2500 V, what is
the potential at x 2 m?a. 1000 V b. 2000 V
c. 4000 Vd. 4500 V
53
A uniform electric field with a magnitude of 500
N/C is directed parallel to the positive x-axis.
If the potential at x 5 m is 2500 V, what is
the potential at x 2 m?a. 1000 V b. 2000 V
c. 4000 Vd. 4500 V
54
What will be the electric potential at a distance
of 0.15 m from a point charge of 6.0 ?C? (kc
8.99 x 109 Nm2/C2)a. 5.4 x 104 V b. 3.6 x 106
V c. 2.4 x 106 Vd. 1.2 x 107 V
55
What will be the electric potential at a distance
of 0.15 m from a point charge of 6.0 ?C? (kc
8.99 x 109 Nm2/C2)a. 5.4 x 104 V b. 3.6 x 106
V c. 2.4 x 106 Vd. 1.2 x 107 V
56
A 0.25 ?F capacitor is connected to a 9.0 V
battery. What is the charge on the
capacitor?a. 1.2 x 1012 C b. 2.2 x 106 C
c. 2.8 x 108 Cd. 3.6 x 107 C
57
A 0.25 ?F capacitor is connected to a 9.0 V
battery. What is the charge on the
capacitor?a. 1.2 x 1012 C b. 2.2 x 106 C
c. 2.8 x 108 Cd. 3.6 x 107 C
58
A wire carries a steady current of 0.1 A over a
period of 20 s. What total charge moves through
the wire in this time interval?a. 200 C b. 20
C c. 2 Cd. 0.005 C
59
A wire carries a steady current of 0.1 A over a
period of 20 s. What total charge moves through
the wire in this time interval?a. 200 C b. 20
C c. 2 Cd. 0.005 C
60
In alternating current, the motion of the
chargesa. continuously changes in the forward
and reverse directions.b. is equal to the speed
of light.c. is greater than the speed of
light.d. in the direction of the electric field.
61
In alternating current, the motion of the
chargesa. continuously changes in the forward
and reverse directions.b. is equal to the speed
of light.c. is greater than the speed of
light.d. in the direction of the electric field.
62
A light bulb has a resistance of 240 ? when
operating at 120 V. What is the current in the
light bulb?a. 2.0 A c. 0.50 Ab. 1.0 A d. 0.20
A
63
A light bulb has a resistance of 240 ? when
operating at 120 V. What is the current in the
light bulb?a. 2.0 A c. 0.50 Ab. 1.0 A d. 0.20
A
64
An electric toaster requires 1100 W at 110 V.
What is the resistance of the heating
coil?a. 7.5 ? c. 1.0 x 101 ?b. 9.0 ? d. 11 ?
65
An electric toaster requires 1100 W at 110 V.
What is the resistance of the heating
coil?a. 7.5 ? c. 1.0 x 101 ?b. 9.0 ? d. 11 ?
66
If the batteries in a portable CD player provide
a terminal voltage of 12 V, what is the potential
difference across the entire player?a. 3.0
V c. 6.0 Vb. 4.0 V d. 12 V
67
If the batteries in a portable CD player provide
a terminal voltage of 12 V, what is the potential
difference across the entire player?a. 3.0
V c. 6.0 Vb. 4.0 V d. 12 V
68
Three resistors with values of 3.0 ?, 6.0 ?, and
12 ? are connected in series. What is the
equivalent resistance of this combination?a. 0.58
? c. 7.0 ?b. 1.7 ? d. 21 ?
69
Three resistors with values of 3.0 ?, 6.0 ?, and
12 ? are connected in series. What is the
equivalent resistance of this combination?a. 0.58
? c. 7.0 ?b. 1.7 ? d. 21 ?
70
Three resistors connected in parallel carry
currents labeled I1, I2, and I3. Which of the
following expresses the total current It in the
combined system?a. It I1 I2 I3 b. It
(1/ I1 1/ I2 1/ I3) c. It I1 I2 I3
d. It (1/I1 1/ I2 1/ I3)1
71
Three resistors connected in parallel carry
currents labeled I1, I2, and I3. Which of the
following expresses the total current It in the
combined system?a. It I1 I2 I3 b. It
(1/ I1 1/ I2 1/ I3) c. It I1 I2 I3
d. It (1/I1 1/ I2 1/ I3)1
72
What is the equivalent resistance for the
resistors in the figure above?a. 25 ? b. 1.0 x
101 ? c. 7.5 ? d. 5.0 ?
73
What is the equivalent resistance for the
resistors in the figure above?a. 25 ? b. 1.0 x
101 ? c. 7.5 ? d. 5.0 ?
74
37. How is the relationship between period and
frequency represented as an equation?
75
T 1/f or f 1/T
76
38. Which carries a sound wave more rapidly, a
solid or a gas? Explain.
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Solid, because it is denser.
78
39. List two ways to increase the electrical
potential energy that can be stored in a
capacitor.
79
1. Larger plates2. Plates closer together3.
Different dielectric4. Increase voltage
80
40. What is the energy of a photon whose
frequency is 3.0 x 1014 Hz? (h 6.63 x 1034
Js 1 eV 1.60 x 10-19 J)
81
E hfE 6.63 x 10-34 x 3 x 1014E 1.99 x 10
-19 J
82
41. An object is placed along the principal axis
of a thin converging lens that has a focal length
of 39 cm. If the distance from the object to the
lens is 51 cm, what is the distance from the
image to the lens?
83

• 1/f 1/ do 1/di
• 1/39 1/51 1/di
• di 166 cm

84
4. Monochromatic light from a helium-neon laser
(l 632.8 nm) shines at a right angle onto the
surface of a diffraction grating that contains
630,692 lines/m. Find the angles at which one
would observe the first-order and second-order
maxima.
85
l d sin q/m632.8 X 10-9 1/(630,692) sinq/1q
23.5º
86
l d sin q/m632.8 X 10-9 1/(630,692) sinq/2q
53.0º
87
43. What is the electric force between an
electron and a proton that are separated by a
distance of 1.0 x 1010 m? (e 1.60 x 1019 C,
kc 8.99 x 109 Nm2/C2)
88
F k q1 q2 / d2F (9 x 109)(1.6 x 10-19)(-1.6
x 10-19)/(1.0 x 1010 )2F -2.3 x 10-8 NThe
charges are opposite so the force is attractive.
89
44. A hair dryer is connected across a 120 V
outlet. If the resistance of the hair dryer is
144 W, how much power is dissipated in the form
of electromagnetic radiation and heat?
90
V IR120 I x 144I 0.8333 AP IVP
0.8333 x 120P 100 W
91
45. Three resistors with values of 16 W, 19 W, 25
W, respectively, are connected in parallel. What
is their equivalent resistance?
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1/RT 1/R1 1/R2 1/R31/RT 1/16 1/19
1/251/RT 0.0625 0.053 0.041/RT
0.15513RT 6.45 ?
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