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09-05-2017
Physics

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The period of a mechanical wave is 5 seconds. What is the frequency of the wave?

10 Hz
2.5 Hz
0.2 Hz
depends on the speed of the wave
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09-05-2017

The frequency of a wave is just the reciprocal of the period.For this one . . .
Frequency = 1/(period) = 1/(5 sec) = 0.2 per sec (0.2 Hz) .

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