The frequency of a wave is 4 hertz .find its time period.
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If the woodpecker drums upon a tree 4 times in one second, then the frequency is 4 Hz; each drum must endure for one-fourth a second, so the period is 0.25 s.
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Hi mate.
it will be 1/4 or 0.25
Explanation:
frequency is inversely propotional to time period .
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