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The averge work done by a human heart wh...

The averge work done by a human heart while it beats once is 0.5J. Calculate the power used by heart if it beats 75 times in a minute.

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`W=0.5xx74"m "P=W/t`
Total work done by the heart when it beats 74 times is
`W=0.5Jxx74=37J`
time `t=1 min=60s`
Power `=W/t=37/60=0.62W`
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