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 2.9 m.
40.6 m/sec
0.21 m/sec
4.83 m/sec
16.9 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?
20.3 meters
2.90 meters
1.45 meters
5.80 meters
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Question 3
A string vibrates at 577 Hz with a wavelength of 2.9 meters. If the wavelength is shortened by 0.725 meters, what is its new frequency?
433 Hz
796 Hz
2308 Hz
769 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 577 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
192 Hz
1731 Hz
865 Hz
1616 Hz
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Question 5
The speed of sound inside a 0.73-meter long open-closed tube (fixed-free) is 348.4 m/sec.What are its first three resonate frequencies?
119 Hz, 358 Hz, 597 Hz
239 Hz, 716 Hz, 1193 Hz
119 Hz, 239 Hz, 358 Hz
239 Hz, 477 Hz, 716 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?
239 Hz, 477 Hz, 716 Hz
239 Hz, 716 Hz, 1193 Hz
119 Hz, 358 Hz, 597 Hz
119 Hz, 239 Hz, 358 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 239 Hz, if the resonating dimension is 0.365 meters and the wave speed is 348.4 m/s, what type of standing wave is being created?
cannot be determined
fixed-fixed
fixed-free
free-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.9 meters deep if sound is resonating at 577 Hz?
418 m/sec
837 m/sec
1673 m/sec
1255 m/sec
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William A. Hilburn
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Application Programmer
Mark Acton