Practice Problems
Wave Fundamentals
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Question 1
A sound wave has a frequency of 449 Hz and travels in air at a speed of 343.6 m/sec. How far apart are any two adjacent wave compressions?
7.93 meters
1.31 meters
0.77 meters
1.53 meters
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Question 2
A fisherman notices that wave crests pass the bow of his anchored boat every 4 seconds. He measures the distance between two wave crests to be 9.6 meters. How fast are the waves traveling?
4.80 m/sec
38.4 m/sec
2.40 m/sec
19.2 m/sec
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Question 3
A wave has a speed of 210 m/sec and a wavelength of 9.6 meters. What is this wave's period?
4.57 x 10
^{-2}
seconds
2.19 x 10
^{1}
seconds
2.2 x 10
^{2}
seconds
2 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 0.21 seconds. What is the wave's frequency?
1.19 x 10
^{0}
Hz
8.4 x 10
^{-1}
Hz
4.76 x 10
^{0}
Hz
2.38 x 10
^{0}
Hz
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Question 5
If the wavelength is 2.245 meters in
Question 4
, that how fast does the wave energy travel along the string?
1.07 x 10
^{1}
m/sec
5.35 x 10
^{0}
m/sec
1.89 x 10
^{0}
m/sec
2.67 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 6.15 x 10
^{14}
Hz. What is the approximate wavelength of the light?
1.63 x 10
^{-15}
meters
4.88 x 10
^{-7}
meters
2.44 x 10
^{-7}
meters
2.05 x 10
^{6}
meters
Copyright © 2007-2017
William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton