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 2.7 m.
2.96 m/sec
10.7 m/sec
21.6 m/sec
0.34 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?
1.35 meters
2.70 meters
5.40 meters
10.8 meters
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Question 3
A string vibrates at 409 Hz with a wavelength of 2.7 meters. If the wavelength is shortened by 0.675 meters, what is its new frequency?
606 Hz
307 Hz
545 Hz
1636 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 409 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
136 Hz
1227 Hz
614 Hz
654 Hz
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Question 5
The speed of sound inside a 0.76-meter long open-closed tube (fixed-free) is 347.2 m/sec.What are its first three resonate frequencies?
114 Hz, 228 Hz, 343 Hz
228 Hz, 457 Hz, 685 Hz
228 Hz, 685 Hz, 1142 Hz
114 Hz, 343 Hz, 571 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?
228 Hz, 685 Hz, 1142 Hz
114 Hz, 228 Hz, 343 Hz
228 Hz, 457 Hz, 685 Hz
114 Hz, 343 Hz, 571 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 228 Hz, if the resonating dimension is 0.38 meters and the wave speed is 347.2 m/s, what type of standing wave is being created?
fixed-fixed
cannot be determined
fixed-free
free-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 2.7 meters deep if sound is resonating at 409 Hz?
1104 m/sec
276 m/sec
552 m/sec
828 m/sec
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton