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 2.3 m.
32.2 m/sec
0.16 m/sec
6.09 m/sec
16.3 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?
2.30 meters
1.15 meters
4.60 meters
16.1 meters
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Question 3
A string vibrates at 563 Hz with a wavelength of 2.3 meters. If the wavelength is shortened by 0.575 meters, what is its new frequency?
751 Hz
422 Hz
2252 Hz
979 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 563 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
188 Hz
845 Hz
1689 Hz
1576 Hz
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Question 5
The speed of sound inside a 0.53-meter long open-closed tube (fixed-free) is 344.8 m/sec.What are its first three resonate frequencies?
325 Hz, 976 Hz, 1626 Hz
325 Hz, 651 Hz, 976 Hz
163 Hz, 325 Hz, 488 Hz
163 Hz, 488 Hz, 813 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?
325 Hz, 976 Hz, 1626 Hz
325 Hz, 651 Hz, 976 Hz
163 Hz, 325 Hz, 488 Hz
163 Hz, 488 Hz, 813 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 325 Hz, if the resonating dimension is 0.265 meters and the wave speed is 344.8 m/s, what type of standing wave is being created?
fixed-fixed
free-free
fixed-free
cannot be determined
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.3 meters deep if sound is resonating at 563 Hz?
324 m/sec
647 m/sec
1295 m/sec
971 m/sec
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William A. Hilburn
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Application Programmer
Mark Acton