6.89 ⚫ BIO Power of the Human Heart. The human heart is a pow- erful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood. Assume that the work done by the heart is equal to the work required to lift this amount of blood a height equal to that of the average American woman (1.63 m). The density (mass per unit vol- ume) of blood is 1.05 × 103 kg/m³. (a) How much work does the heart do in a day? (b) What is the heart's power output in watts?

6.89 ⚫ BIO Power of the Human Heart. The human heart is a pow- erful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood. Assume that the work done by the heart is equal to the work required to lift this amount of blood a height equal to that of the average American woman (1.63 m). The density (mass per unit vol- ume) of blood is 1.05 × 103 kg/m³. (a) How much work does the heart do in a day? (b) What is the heart's power output in watts?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 80P: Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a...

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