Practice Problems
Assorted Resonance
Directions:
On this worksheet you will be investigating examples of resonance.
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Question 1
What is the wave speed of a wave traveling through a long spring if its frequency is 12 Hz and its wavelength is 2.9 m.
14.9 m/sec
34.8 m/sec
0.24 m/sec
4.14 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?
1.45 meters
5.80 meters
17.4 meters
2.90 meters
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Question 3
A string vibrates at 305 Hz with a wavelength of 2.9 meters. If the wavelength is shortened by 0.725 meters, what is its new frequency?
1220 Hz
421 Hz
229 Hz
407 Hz
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Question 4
A fundamental fixed-fixed standing wave is generated along a 1.2-meter string when its frequency is 305 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
915 Hz
732 Hz
458 Hz
102 Hz
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Question 5
The speed of sound inside a 0.44-meter long open-closed tube (fixed-free) is 348.4 m/sec.What are its first three resonate frequencies?
396 Hz, 792 Hz, 1188 Hz
396 Hz, 1188 Hz, 1980 Hz
198 Hz, 594 Hz, 990 Hz
198 Hz, 396 Hz, 594 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?
396 Hz, 792 Hz, 1188 Hz
198 Hz, 594 Hz, 990 Hz
198 Hz, 396 Hz, 594 Hz
396 Hz, 1188 Hz, 1980 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 396 Hz, if the resonating dimension is 0.22 meters and the wave speed is 348.4 m/s, what type of standing wave is being created?
fixed-fixed
free-free
cannot be determined
fixed-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 305 Hz?
442 m/sec
221 m/sec
885 m/sec
663 m/sec
Copyright © 2007-2019
William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton