PHYS 244 FINAL EXAM |QUESTIONS & ANSWERS VERIFIED
SOLUTIONS 100%|GRADE A+|LATEST 2024/2025
178) A 0.50-kg object is attached to an ideal spring of spring constant (force
constant) 20 N/m along a horizontal, frictionless surface. The object oscillates in
simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At
what distance from the equilibrium position 39 are the kinetic energy and potential
energy of the system the same?
A) 0.017 m
B) 0.029 m
C) 0.12 m
D) 0.17 m - ✔✔D
179) What is the length of a simple pendulum with a period of 2.0 s?
A) 20 m
B) 0.99 m
C) 1.2 m
D) 1.6 m
E) 0.87 m - ✔✔B
180) Tarzan swings back and forth on a long vine. His friend Jane notices in
amazement that he makes 30 complete swings in 2.4 minutes.
(a) What is the frequency (in hertz) of Tarzan's swing?
(b) How long is the vine he is using? - ✔✔(a) 0.21 Hz (b) 5.7 m
,181) Suppose you want to set up a simple pendulum with a period of 2.50 s. How
long should it be
(a) on Earth, at a location where g = 9.80 m/s2?
(b) on a planet where g is 5.00 times what it is on Earth? - ✔✔(a) 1.55 m (b) 7.76
m
182) A tsunami, an ocean wave generated by an earthquake, propagates along the
open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency
of the waves in such a tsunami?
A) 0.93 Hz
B) 0.00026 Hz
C) 1.1 Hz
D) 6.8 Hz
E) 0.15 Hz - ✔✔B
183) What is the frequency of a pressure wave of wavelength 2.5 m that is
traveling at 1400 m/s?
A) 178 Hz
B) 1.78 kHz
C) 560 Hz
D) 5.6 kHz - ✔✔C
184) The figure shows a "snapshot" of a wave at a given instant of time. The
frequency of this wave is 120 Hz. What are the
PICTURE
(a) amplitude,
(b) wavelength, and
, (c) speed of this wave? - ✔✔(a) 0.10 m (b) 0.20 m (c) 24 m/s
185) A wave whose wavelength is 0.500 m is traveling down a 500-m long wire
whose total mass is 25 kg and is under a tension of 2000 N.
(a) What is the speed of the wave on the wire?
(b) Find the frequency of this wave. - ✔✔(a) 200 m/s (b) 400 Hz
186) The density of aluminum is 2700 kg/m3. If transverse waves travel at in an
aluminum wire of diameter what is the tension on the wire?
A) 65 N
B) 39 N
C) 52 N
D) 78 N - ✔✔A
187) A rope with a total mass of 25.0 kg is tied to a tree on one side of a 125-m
wide ravine. You are pulling on the other end of the rope with a force of 415 N. If
you pluck the rope at your end, how long will it take the pulse to travel across the
ravine to the tree? - ✔✔2.74 s
188) A standing wave is oscillating at 950 Hz on a string, as shown in the figure.
What is the wave speed?
PICTURE
A) 380 m/s
B) 570 m/s
C) 290 m/s
D) 190 m/s - ✔✔A
SOLUTIONS 100%|GRADE A+|LATEST 2024/2025
178) A 0.50-kg object is attached to an ideal spring of spring constant (force
constant) 20 N/m along a horizontal, frictionless surface. The object oscillates in
simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At
what distance from the equilibrium position 39 are the kinetic energy and potential
energy of the system the same?
A) 0.017 m
B) 0.029 m
C) 0.12 m
D) 0.17 m - ✔✔D
179) What is the length of a simple pendulum with a period of 2.0 s?
A) 20 m
B) 0.99 m
C) 1.2 m
D) 1.6 m
E) 0.87 m - ✔✔B
180) Tarzan swings back and forth on a long vine. His friend Jane notices in
amazement that he makes 30 complete swings in 2.4 minutes.
(a) What is the frequency (in hertz) of Tarzan's swing?
(b) How long is the vine he is using? - ✔✔(a) 0.21 Hz (b) 5.7 m
,181) Suppose you want to set up a simple pendulum with a period of 2.50 s. How
long should it be
(a) on Earth, at a location where g = 9.80 m/s2?
(b) on a planet where g is 5.00 times what it is on Earth? - ✔✔(a) 1.55 m (b) 7.76
m
182) A tsunami, an ocean wave generated by an earthquake, propagates along the
open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency
of the waves in such a tsunami?
A) 0.93 Hz
B) 0.00026 Hz
C) 1.1 Hz
D) 6.8 Hz
E) 0.15 Hz - ✔✔B
183) What is the frequency of a pressure wave of wavelength 2.5 m that is
traveling at 1400 m/s?
A) 178 Hz
B) 1.78 kHz
C) 560 Hz
D) 5.6 kHz - ✔✔C
184) The figure shows a "snapshot" of a wave at a given instant of time. The
frequency of this wave is 120 Hz. What are the
PICTURE
(a) amplitude,
(b) wavelength, and
, (c) speed of this wave? - ✔✔(a) 0.10 m (b) 0.20 m (c) 24 m/s
185) A wave whose wavelength is 0.500 m is traveling down a 500-m long wire
whose total mass is 25 kg and is under a tension of 2000 N.
(a) What is the speed of the wave on the wire?
(b) Find the frequency of this wave. - ✔✔(a) 200 m/s (b) 400 Hz
186) The density of aluminum is 2700 kg/m3. If transverse waves travel at in an
aluminum wire of diameter what is the tension on the wire?
A) 65 N
B) 39 N
C) 52 N
D) 78 N - ✔✔A
187) A rope with a total mass of 25.0 kg is tied to a tree on one side of a 125-m
wide ravine. You are pulling on the other end of the rope with a force of 415 N. If
you pluck the rope at your end, how long will it take the pulse to travel across the
ravine to the tree? - ✔✔2.74 s
188) A standing wave is oscillating at 950 Hz on a string, as shown in the figure.
What is the wave speed?
PICTURE
A) 380 m/s
B) 570 m/s
C) 290 m/s
D) 190 m/s - ✔✔A
