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07-03-2016
Physics

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how many seconds is the period of a 440-hertz sound

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07-03-2016

The period is the reciprocal of the frequency.

T = 1 / f .

'Hz' = 'Hertz' means 'per second' or ' /sec '.

440 Hz = 440/sec .

The period (reciprocal) = sec/440 = 0.0022727... repeating

= 2-3/11 milliseconds

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