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A human heart discharges 75 cc of blood ...

A human heart discharges 75 cc of blood the through the artcries at each beat against an average pressure of 10 cm ofmercutry.Assuming that the pulse frequency is 72 per minute,the rate of working of heart is watt is (density of mercury = `13.6 g cm^-3` and `g = 9.8 m s^(-2)`):

A

11.9 W

B

1.19 W

C

0.119 W

D

119 W.

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JBD PUBLICATION-WORK,ENERGY AND POWER-EXAMPLE
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  11. Is mass of a body conserved?

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  12. What is the work done by centripetal force?/

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  13. What it Einstein's mass energy relation?

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