The human heart pumps about 75 mi of blood per heart beat. Assume that the work done by the heart is equal to lifting the blood up to the height of a person of 1.70 m. The density of blood (mass per volume) is 1.05 -10 kg/m and a typical pulse rate is about 80 beats per minute. a) How much work does the heart do per day? b) What is its power output in Watts? Hint: It is always a good idea to transform all units into Sl units. What form of energy do you have to consider in this problem?

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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The human heart pumps about 75 mi of blood per heart beat. Assume that the work done by the
heart is equal to lifting the blood up to the height of a person of 1.70 m. The density of blood
(mass per volume) is 1.05 -10 kg/m³ and a typical pulse rate is about 80 beats per minute.
a) How much work does the heart do per day?
b) What is its power output in Watts?
Hint: It is always a good idea to transform all units into Sl units. What form of energy do you have
to consider in this problem?
Transcribed Image Text:The human heart pumps about 75 mi of blood per heart beat. Assume that the work done by the heart is equal to lifting the blood up to the height of a person of 1.70 m. The density of blood (mass per volume) is 1.05 -10 kg/m³ and a typical pulse rate is about 80 beats per minute. a) How much work does the heart do per day? b) What is its power output in Watts? Hint: It is always a good idea to transform all units into Sl units. What form of energy do you have to consider in this problem?
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