Practice Problems
Wave Fundamentals
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Question 1
A sound wave has a frequency of 494 Hz and travels in air at a speed of 344.8 m/sec. How far apart are any two adjacent wave compressions?
0.70 meters
1.43 meters
1.40 meters
8.39 meters
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Question 2
A fisherman notices that wave crests pass the bow of his anchored boat every 3 seconds. He measures the distance between two wave crests to be 3.2 meters. How fast are the waves traveling?
1.07 m/sec
4.8 m/sec
9.6 m/sec
2.13 m/sec
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Question 3
A wave has a speed of 230 m/sec and a wavelength of 3.2 meters. What is this wave's period?
2.27 x 10
^{2}
seconds
7.19 x 10
^{1}
seconds
2.33 x 10
^{2}
seconds
1.39 x 10
^{-2}
seconds
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Question 4
A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.23 seconds. What is the wave's frequency?
4.35 x 10
^{0}
Hz
9.2 x 10
^{-1}
Hz
2.17 x 10
^{0}
Hz
1.09 x 10
^{0}
Hz
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Question 5
If the wavelength is 2.47 meters in
Question 4
, that how fast does the wave energy travel along the string?
2.27 x 10
^{0}
m/sec
2.68 x 10
^{0}
m/sec
1.07 x 10
^{1}
m/sec
5.37 x 10
^{0}
m/sec
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Question 6
Light has a speed in a vacuum of 3 x 10
^{8}
m/s. The frequency of visible light is about 4.7 x 10
^{14}
Hz. What is the approximate wavelength of the light?
3.19 x 10
^{-7}
meters
1.57 x 10
^{6}
meters
6.38 x 10
^{-7}
meters
2.13 x 10
^{-15}
meters
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton