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Q.

If the heart pushes 1 cc of blood in one second under pressure 20000 N/m2 the power of heart is

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a

0.02 W

b

400 W

c

5×10−10W

d

0.2 W

answer is A.

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Detailed Solution

Power = workdone  time = pressure × change in volume  time =20000×1×10−61=2×10−2=0.02W
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If the heart pushes 1 cc of blood in one second under pressure 20000 N/m2 the power of heart is