Practice Problems
Wave Fundamentals
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Question 1
A sound wave has a frequency of 440 Hz and travels in air at a speed of 346.6 m/sec. How far apart are any two adjacent wave compressions?
7.87 meters
0.79 meters
1.58 meters
1.27 meters
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Question 2
A fisherman notices that wave crests pass the bow of his anchored boat every 5 seconds. He measures the distance between two wave crests to be 9.5 meters. How fast are the waves traveling?
3.80 m/sec
1.90 m/sec
23.8 m/sec
47.5 m/sec
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Question 3
A wave has a speed of 260 m/sec and a wavelength of 9.5 meters. What is this wave's period?
2.51 x 10
^{2}
seconds
3.65 x 10
^{-2}
seconds
2.74 x 10
^{1}
seconds
2.7 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 0.26 seconds. What is the wave's frequency?
9.62 x 10
^{-1}
Hz
3.85 x 10
^{0}
Hz
1.92 x 10
^{0}
Hz
1.04 x 10
^{0}
Hz
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Question 5
If the wavelength is 2.2 meters in
Question 4
, that how fast does the wave energy travel along the string?
4.23 x 10
^{0}
m/sec
2.29 x 10
^{0}
m/sec
2.12 x 10
^{0}
m/sec
8.46 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 5.4 x 10
^{14}
Hz. What is the approximate wavelength of the light?
2.78 x 10
^{-7}
meters
1.85 x 10
^{-15}
meters
1.8 x 10
^{6}
meters
5.56 x 10
^{-7}
meters
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William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton