Practice Problems
Wave Fundamentals
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Question 1
A sound wave has a frequency of 257 Hz and travels in air at a speed of 343 m/sec. How far apart are any two adjacent wave compressions?
2.67 meters
0.75 meters
1.33 meters
6.00 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 9.6 meters. How fast are the waves traveling?
28.8 m/sec
3.20 m/sec
6.40 m/sec
14.4 m/sec
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Question 3
A wave has a speed of 200 m/sec and a wavelength of 9.6 meters. What is this wave's period?
2.08 x 10
1
seconds
1.9 x 10
2
seconds
2.1 x 10
2
seconds
4.8 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 0.2 seconds. What is the wave's frequency?
5 x 10
0
Hz
8 x 10
-1
Hz
2.5 x 10
0
Hz
1.25 x 10
0
Hz
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Question 5
If the wavelength is 1.285 meters in
Question 4
, that how fast does the wave energy travel along the string?
3.21 x 10
0
m/sec
6.43 x 10
0
m/sec
1.03 x 10
0
m/sec
1.61 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 6.38 x 10
14
Hz. What is the approximate wavelength of the light?
2.13 x 10
6
meters
2.35 x 10
-7
meters
1.57 x 10
-15
meters
4.7 x 10
-7
meters
Copyright © 2007-2009
William A. Hilburn
All rights reserved.
Application Programmer
Mark Acton