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 14 Hz and its wavelength is 2.5 m.
35.0 m/sec
0.18 m/sec
5.60 m/sec
16.5 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?
2.50 meters
5.00 meters
1.25 meters
17.5 meters
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Question 3
A string vibrates at 517 Hz with a wavelength of 2.5 meters. If the wavelength is shortened by 0.625 meters, what is its new frequency?
388 Hz
689 Hz
827 Hz
2068 Hz
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Question 4
A fundamental fixed-fixed standing wave is generated along a 1.4-meter string when its frequency is 517 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
172 Hz
1551 Hz
775 Hz
1448 Hz
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Question 5
The speed of sound inside a 0.5-meter long open-closed tube (fixed-free) is 346 m/sec.What are its first three resonate frequencies?
173 Hz, 519 Hz, 865 Hz
173 Hz, 346 Hz, 519 Hz
346 Hz, 692 Hz, 1038 Hz
346 Hz, 1038 Hz, 1730 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?
346 Hz, 1038 Hz, 1730 Hz
173 Hz, 519 Hz, 865 Hz
346 Hz, 692 Hz, 1038 Hz
173 Hz, 346 Hz, 519 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 346 Hz, if the resonating dimension is 0.25 meters and the wave speed is 346 m/s, what type of standing wave is being created?
fixed-fixed
fixed-free
cannot be determined
free-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.5 meters deep if sound is resonating at 517 Hz?
969 m/sec
323 m/sec
646 m/sec
1293 m/sec
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William A. Hilburn
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Application Programmer
Mark Acton