Practice Problems
Assorted Resonance
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Question 1
What is the wave speed of a wave traveling through a long spring if its frequency is 13 Hz and its wavelength is 2.1 m.
27.3 m/sec
6.19 m/sec
0.16 m/sec
15.1 m/sec
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Question 2
Given that the spring in
Question 1
does not change, what would be the wave's new wavelength if the frequency of oscillation were to be doubled?
2.10 meters
1.05 meters
4.20 meters
13.7 meters
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Question 3
A string vibrates at 525 Hz with a wavelength of 2.1 meters. If the wavelength is shortened by 0.525 meters, what is its new frequency?
394 Hz
700 Hz
2100 Hz
1000 Hz
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Question 4
A fundamental fixed-fixed standing wave is generated along a 1.3-meter string when its frequency is 525 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
175 Hz
788 Hz
1365 Hz
1575 Hz
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Question 5
The speed of sound inside a 0.76-meter long open-closed tube (fixed-free) is 343.6 m/sec.What are its first three resonate frequencies?
113 Hz, 339 Hz, 565 Hz
226 Hz, 452 Hz, 678 Hz
226 Hz, 678 Hz, 1130 Hz
113 Hz, 226 Hz, 339 Hz
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Question 6
If the tube in
Question 5
was now opened on both ends (free-free), what would be its new first three resonate frequencies?
226 Hz, 678 Hz, 1130 Hz
226 Hz, 452 Hz, 678 Hz
113 Hz, 226 Hz, 339 Hz
113 Hz, 339 Hz, 565 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 226 Hz, if the resonating dimension is 0.38 meters and the wave speed is 343.6 m/s, what type of standing wave is being created?
fixed-fixed
cannot be determined
fixed-free
free-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.1 meters deep if sound is resonating at 525 Hz?
827 m/sec
551 m/sec
276 m/sec
1103 m/sec
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton