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 1.8 m.
9.8 m/sec
4.44 m/sec
0.23 m/sec
14.4 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?
0.90 meters
3.60 meters
7.2 meters
1.80 meters
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Question 3
A string vibrates at 570 Hz with a wavelength of 1.8 meters. If the wavelength is shortened by 0.45 meters, what is its new frequency?
428 Hz
2280 Hz
760 Hz
1267 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 570 Hz. What would be the frequency of a 3rd harmonic wave generated along this same string?
912 Hz
855 Hz
190 Hz
1710 Hz
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Question 5
The speed of sound inside a 0.48-meter long open-closed tube (fixed-free) is 341.8 m/sec.What are its first three resonate frequencies?
178 Hz, 534 Hz, 890 Hz
356 Hz, 1068 Hz, 1780 Hz
178 Hz, 356 Hz, 534 Hz
356 Hz, 712 Hz, 1068 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?
356 Hz, 1068 Hz, 1780 Hz
356 Hz, 712 Hz, 1068 Hz
178 Hz, 534 Hz, 890 Hz
178 Hz, 356 Hz, 534 Hz
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Question 7
The lowest frequency that a conch shell is able to produce is 356 Hz, if the resonating dimension is 0.24 meters and the wave speed is 341.8 m/s, what type of standing wave is being created?
fixed-fixed
cannot be determined
free-free
fixed-free
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Question 8
What is the speed of sound in a chamber (fixed-free) that is 1.8 meters deep if sound is resonating at 570 Hz?
770 m/sec
513 m/sec
257 m/sec
1026 m/sec
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton