Unit: Waves
Year: 1988 Question#: 47
Question: The speed of a transverse wave in a spring is 12 meters per second. If the frequency of the source producing the wave is 3.0 hertz, what is the wavelength?
(1 ) 0.25 m
(2 ) 2.0 m
(3 ) 36 m
(4 ) 4.0 m
What is this question really asking?
Explanation by: Melissa H.
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Answer 1
0.25 m
Incorrect
This answer is incorrect because
.
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Answer 2
2.0 m
Incorrect
This answer is incorrect because
return to top Answer 3
36 m
Incorrect
This answer is incorrect because the two measurments were multiplied. Try using algebra more carefully applied to
return to top Answer 4
4.0 m
Correct
This answer is correct because
. There is no real formula for wavelength, so you have to use the formula for speed
and change the numbers around by dividing each side by frequency so that wavelenght
is by itself. So you end up with wavelength equals speed divided by frequency.
return to top What's this question really asking?
This question is really asking if you know how to use the formula to find wavelength. return to top
