a. Explanation Given data: Volume of the blood ( V ) is 6.0 L. The average blood pressure ( P ) is 1.3 × 10 4 N m 2 . Formula used: Write the expression for work done by the heart as follows. W = P A d (1) Here, P is the average blood pressure, A is the area that the blood flows through the human body, and d is the distance travelled by the blood through the human body. Write the expression for volume of the blood as follows. V = A d (2) Write the conversion factor to convert the volume blood from Liter to the m 3 as follows. 1 L = 10 − 3 m 3 Use the conversion factor and convert the given volume of the blood in terms of m 3 as follows. V = 6 .0 L = ( 6.0 ) ( 10 − 3 m 3 ) { ∵ 1 L = 10 − 3 m 3 } = 6.0 × 10 − 3 m 3 Calculation of work done by the heart: From equation (2), substitute V for ( A d ) in equation (1) as follows. W = P V Substitute 1.3 × 10 4 N m 2 for P , and ( 6 b. To determine To find: The power output.

College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

Chapter 10, Problem 80GP

To determine

To find: The work done by the human heart to move the blood completely through the body.

To determine

To find: The power output.

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Chapter 10, Problem 79GP

Chapter 10, Problem 81MSPP

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Chapter 10 Solutions

College Physics: A Strategic Approach (3rd Edition)

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The work done by the human heart to move the blood completely through the body.

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To find: The work done by the human heart to move the blood completely through the body.

To find: The power output.

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Chapter 10 Solutions