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Explain, in terms of the definition of power, why energy

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Problem 19CQ Chapter 7

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 19CQ

Explain, in terms of the definition of power, why energy consumption is sometimes listed in kilowatt-hours rather than joules. What is the relationship between these two energy units?

Step-by-Step Solution:

Step-by-step solution 19CQ Step 1 of 3 Power consumption is the rate at which energy is consumed; therefore the energy consumed over time t is, Here is the energy, is the power and is the time. Step 2 of 3 Electricity bills use the unit kilowatt-hours for energy consumed because energy consumption at the kilowatt level for hours is typical, joules (J) is too small to use for everyday electrical consumption. Since,

Step 3 of 3

Chapter 7, Problem 19CQ is Solved
Textbook: Physics: Principles with Applications
Edition: 6th
Author: Douglas C. Giancoli
ISBN: 9780130606204

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