The work done by the heart is 1 joule per beat. Calculate the power of the heart, if it beats 72 times in one minute.

72 W

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1 W

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1.2 W

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7.2 W

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Solution

The correct option is C
1.2 W

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Each time the heart beats, it requires 5 J of energy. If it beats 72 times in one minute then the power consumed by the heart is 360 W.

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