What is this frequency of this sound wave
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What is this frequency of this sound wave

[From: ] [author: ] [Date: 11-09-04] [Hit: ]
02 sec,f = 1/(0.02 sec) = 50/sec = 50 Hz.The book is wrong.......
The period of this sound wave is 0.02 seconds (1/50th of a second). Show that the frequency of the sound produced is 100Hz.

Is there a mistake with this question? Especially where it says 100Hz.

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The frequency (f) and period (P) of a wave a inversely related:

f = 1/P

In this case, the period is 0.02 sec, so the frequency is:

f = 1/(0.02 sec) = 50/sec = 50 Hz.

The book is wrong.
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