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1. If a turntable rotates through 720 degrees in one second, how many revolutions does it make in one minute?

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  1. 11 May, 12:48
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    The answer is 120 revolutions.

    1 second = 720 degrees

    60 seconds = 60 * 720 = 43200 degrees

    43200 / 360 (per revolution) = 120 revolutions

    or

    720 degrees/sec x 60s/min x 1 revolution/360 degrees = 120 rev/min.
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