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13 Dec 2019
Your heart beats at the rate of 70 times a minute; each beat pumps about 60 cm3 of fluid against a blood pressure of 120 mm Hg. How much expansion work (in Joules) does the heart do in a day? (Note: the heart actually does much more work than this. The heart muscles are contracting, the blood is accelerated, and there are frictional losses and other factors involved.)
Your heart beats at the rate of 70 times a minute; each beat pumps about 60 cm3 of fluid against a blood pressure of 120 mm Hg. How much expansion work (in Joules) does the heart do in a day? (Note: the heart actually does much more work than this. The heart muscles are contracting, the blood is accelerated, and there are frictional losses and other factors involved.)
Jean KeelingLv2
17 Dec 2019
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