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07-05-2015
Physics

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New York's 300m high Citicorp tower oscillates in the wind with a period of 6.8s. Calculate the frequency of the vibration.

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07-05-2015

Frequency = 1 / period

Frequency = 1 / 6.8 sec = 0.147 / sec = 0.147 Hz.

( " 1 Hertz " means " 1 per second " )

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