phy 232 final Exam 2026 Questions and
Answers
1. ) Four traveling waves are described by the following equations, where all
quantities are measured in SI units and y represents the displacement.
I:y = 0.12 cos(3x - 21t)
II:y = 0.15 sin(6x + 42t)
III:y = 0.13 cos(6x + 21t)
IV:y = -0.27 sin(3x - 42t)
Which of these waves have the same period?
A) I and III, and also II and IV
B) I and IV, and also II and III
C) I and II, and also III and IV
D) All of them have the same period.
E) They all have different periods. - Correct answer-A) I and III, and also II and IV
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,2. Two waves are traveling toward each other along a rope. When they meet, the
waves
(a)pass through each other
(b)bounce off of each other.
(c)disappear. - Correct answer-pass through eachother
3. When a weight is hanging from a light vertical string, the speed of pulses on the
strige is v. If a second weight W is added without stretching the string, the speed of
pulses on this string will now become
(a) 2v
(b) (2)1/2v
(c) V
(d)v/2 - Correct answer-(b) (2)1/2v
5. Ocean tides are waves that have a period of 12 hours, an amplitude (in some
places) of 1.50 m, and a speed of 750 km/hr. What is the distance between adjacent
crests of these waves?
A) 9000 km
B) 32,400 km
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, C) 9000 m
D) 32,400 m
E) 2500 m - Correct answer-A) 9000 km
6. The frequency of a certain wave is 10 hertz and its period is
(a) 0.1 second
(b) 0.3 second
(c) 0.5 second
(d) 0.9 second - Correct answer-(a) 0.1 second
7. An object that completes 10 vibrations in 20 seconds has a frequency of
a 0.1 hertz
(b) 0.9 hertz
(c) 0.3 hertz
(d) 0.5 hertz - Correct answer-(d) 0.5 hertz
1. In a resonating pipe that is open at both ends, there
A) are displacement nodes at each end.
B) are displacement antinodes at each end.
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Answers
1. ) Four traveling waves are described by the following equations, where all
quantities are measured in SI units and y represents the displacement.
I:y = 0.12 cos(3x - 21t)
II:y = 0.15 sin(6x + 42t)
III:y = 0.13 cos(6x + 21t)
IV:y = -0.27 sin(3x - 42t)
Which of these waves have the same period?
A) I and III, and also II and IV
B) I and IV, and also II and III
C) I and II, and also III and IV
D) All of them have the same period.
E) They all have different periods. - Correct answer-A) I and III, and also II and IV
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,2. Two waves are traveling toward each other along a rope. When they meet, the
waves
(a)pass through each other
(b)bounce off of each other.
(c)disappear. - Correct answer-pass through eachother
3. When a weight is hanging from a light vertical string, the speed of pulses on the
strige is v. If a second weight W is added without stretching the string, the speed of
pulses on this string will now become
(a) 2v
(b) (2)1/2v
(c) V
(d)v/2 - Correct answer-(b) (2)1/2v
5. Ocean tides are waves that have a period of 12 hours, an amplitude (in some
places) of 1.50 m, and a speed of 750 km/hr. What is the distance between adjacent
crests of these waves?
A) 9000 km
B) 32,400 km
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, C) 9000 m
D) 32,400 m
E) 2500 m - Correct answer-A) 9000 km
6. The frequency of a certain wave is 10 hertz and its period is
(a) 0.1 second
(b) 0.3 second
(c) 0.5 second
(d) 0.9 second - Correct answer-(a) 0.1 second
7. An object that completes 10 vibrations in 20 seconds has a frequency of
a 0.1 hertz
(b) 0.9 hertz
(c) 0.3 hertz
(d) 0.5 hertz - Correct answer-(d) 0.5 hertz
1. In a resonating pipe that is open at both ends, there
A) are displacement nodes at each end.
B) are displacement antinodes at each end.
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