# Physics

The human heart discharges 75ml of blood at each beat against the pressure of 0.1mmHg. Calculate the power of the heart assuming that the purse frequency is 80 beats per minute.(density of mercury is 13.6*10^3 Kg/m3)

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1. hkyj

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posted by jj
2. 1.33 watt

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3. Power P = (13 600 × 9.8 × 0.1 × 10^(-3))(75 × 10^(-6) × 80)/60 = 0.001 332 8 W.

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posted by Koh

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