In each heartbeat, a heart pumps 80 mL of blood at an average pressure of 100 mm of Hg. What will the power output of the heart? (Assume 60 heartbeat…

Question

In each heartbeat, a heart pumps 80 mL of blood at an average pressure of 100 mm of Hg. What will the power output of the heart? (Assume 60 heartbeat per minute)

MARKS Content Team · Accepted Answer

Correct answer: (C) 1.06 W. Work done by the heart = PdV dV = (60) x (80 x 10-6 m3) P = (100 mm of Hg) ×(1.01×10^5 Pa)/(760 mm of Hg) =1.33×10^4 Pa Power = (Work done)/Time =(1.33×10^4 Pa×60×80×10^(-6) m^3)/(60 s) Power = 1.06 W

In each heartbeat, a heart pumps $80 mL$ of blood at an average pressure of $100 mm$ of $Hg$ . What will the power output of the heart? (Assume $60$ heartbeat per minute)

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