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 8 Hz and its wavelength is 2.4 m.
3.33 m/sec
0.30 m/sec
10.4 m/sec
19.2 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?
4.80 meters
2.40 meters
9.6 meters
1.20 meters
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Question 3
A string vibrates at 625 Hz with a wavelength of 2.4 meters. If the wavelength is shortened by 0.6 meters, what is its new frequency?
1042 Hz
2500 Hz
469 Hz
833 Hz
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Question 4
A fundamental fixed-fixed standing wave is generated along a 0.8-meter string when its frequency is 625 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
1875 Hz
1000 Hz
208 Hz
938 Hz
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Question 5
The speed of sound inside a 0.76-meter long open-closed tube (fixed-free) is 345.4 m/sec.What are its first three resonate frequencies?
114 Hz, 227 Hz, 341 Hz
114 Hz, 341 Hz, 568 Hz
227 Hz, 682 Hz, 1136 Hz
227 Hz, 454 Hz, 682 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?
114 Hz, 341 Hz, 568 Hz
227 Hz, 682 Hz, 1136 Hz
227 Hz, 454 Hz, 682 Hz
114 Hz, 227 Hz, 341 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 227 Hz, if the resonating dimension is 0.38 meters and the wave speed is 345.4 m/s, what type of standing wave is being created?
fixed-free
cannot be determined
fixed-fixed
free-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.4 meters deep if sound is resonating at 625 Hz?
375 m/sec
1125 m/sec
1500 m/sec
750 m/sec
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton