a. Explanation Given data: P = 480 W and v = 15 km h . Consider a typical efficiency for cyclist is about 25%. Therefore, the increased power is calculated as follows. P = ( 25 % ) ( 480 W ) = ( 25 b. To determine To find: The force exerts to overcome the force of air resistance.

Student Workbook for College Physics: A Strategic Approach Volume 1 (Chs. 1-16)

3rd Edition

ISBN: 9780321908865

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 11, Problem 42GP

To determine

To find: The amount of power does the person uses for forward motion.

To determine

To find: The force exerts to overcome the force of air resistance.

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Chapter 11, Problem 41GP

Chapter 11, Problem 43GP

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Chapter 11 Solutions

Student Workbook for College Physics: A Strategic Approach Volume 1 (Chs. 1-16)

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The amount of power does the person uses for forward motion.

Solution Summary: The author explains how the amount of power used for forward motion is underset_120W.

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To find: The amount of power does the person uses for forward motion.

To find: The force exerts to overcome the force of air resistance.

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Chapter 11 Solutions