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 11 Hz and its wavelength is 2 m.
13.0 m/sec
22.0 m/sec
5.50 m/sec
0.18 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?
1.00 meters
11.0 meters
4.00 meters
2.00 meters
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Question 3
A string vibrates at 605 Hz with a wavelength of 2 meters. If the wavelength is shortened by 0.5 meters, what is its new frequency?
2420 Hz
454 Hz
1210 Hz
807 Hz
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Question 4
A fundamental fixed-fixed standing wave is generated along a 1.1-meter string when its frequency is 605 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
1331 Hz
202 Hz
907 Hz
1815 Hz
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Question 5
The speed of sound inside a 0.76-meter long open-closed tube (fixed-free) is 343 m/sec.What are its first three resonate frequencies?
226 Hz, 451 Hz, 677 Hz
113 Hz, 226 Hz, 338 Hz
226 Hz, 677 Hz, 1128 Hz
113 Hz, 338 Hz, 564 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, 451 Hz, 677 Hz
113 Hz, 338 Hz, 564 Hz
226 Hz, 677 Hz, 1128 Hz
113 Hz, 226 Hz, 338 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 m/s, what type of standing wave is being created?
fixed-free
cannot be determined
free-free
fixed-fixed
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2 meters deep if sound is resonating at 605 Hz?
605 m/sec
1210 m/sec
303 m/sec
908 m/sec
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William A. Hilburn
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Application Programmer
Mark Acton