A waves oscillate up and down 90 times per a minute. Calculate the frequency of the wave.

90 Hz.

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60 Hz.

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1.5 Hz.

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0.6 Hz.

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0.67 Hz.

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Solution

The correct option is A 1.5 Hz.
A hertz is a cycle per second. The waves oscillate at 90 cycles per minute, or 90 cycles/60 s = 1.5 cycles/sec or 1.5 Hz.

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