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 2.3 m.
3.48 m/sec
0.29 m/sec
18.4 m/sec
10.3 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?
4.60 meters
1.15 meters
9.2 meters
2.30 meters
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Question 3
A string vibrates at 562 Hz with a wavelength of 2.3 meters. If the wavelength is shortened by 0.575 meters, what is its new frequency?
977 Hz
422 Hz
2248 Hz
749 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 562 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
843 Hz
1686 Hz
899 Hz
187 Hz
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Question 5
The speed of sound inside a 0.68-meter long open-closed tube (fixed-free) is 344.8 m/sec.What are its first three resonate frequencies?
127 Hz, 254 Hz, 380 Hz
254 Hz, 761 Hz, 1268 Hz
254 Hz, 507 Hz, 761 Hz
127 Hz, 380 Hz, 634 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?
254 Hz, 507 Hz, 761 Hz
127 Hz, 254 Hz, 380 Hz
254 Hz, 761 Hz, 1268 Hz
127 Hz, 380 Hz, 634 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 254 Hz, if the resonating dimension is 0.34 meters and the wave speed is 344.8 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 2.3 meters deep if sound is resonating at 562 Hz?
323 m/sec
1293 m/sec
646 m/sec
969 m/sec
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton