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Power

The work done...

Question

The work done by heart every beat is 1 J. If heart‟s power in a patient was found to be 1.3 W,
find number of times, his heart is beating in one minute.

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Solution

Power = work / time
time = work / power
= 1 / 1.3
= 0.76s
time taken for 1 heart beat = 0.76s
number of times heart beat in 1 minute = 60 / 0.76 = 78.94 times

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