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7 October, 13:13

What is the frequency of a wave having a period equal to 18 seconds? a. 6.6 * 10-2 hertz b. 5.5 * 10-2 hertz c. 3.3 * 10-2 hertz d. 1.8 * 10-2 hertz e. 8.0 * 10-3 hertz

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  1. 7 October, 15:03
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    Frequency = 1/period ... 1 / 18 sec = (1/18) per sec. That's 0.056 per sec or 0.056 Hz. (rounded) (5.6 x 10^-2 Hz)
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