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A healthy heart pumps about 70 ml of blood in one heart beat. The average pressure exerted is about 100 mm-Hg and there are 70 heartbeats in a minute.

(a) What is the average power output of the heart?

(b) Typical granulated sugar carries nutritional energy of about 387 kcal (1619 kJ) per 100 g. How much sugar does one have to consume per day to supply the energy for pumping blood?

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