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Work, Energy and Energy Resources

40 Lessons 2 hours

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Introduction to Work, Energy, and Energy Resources

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What It Means to Do Work

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3

Calculating Work

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4

Summarizing Work: The Scientific Definition

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5

Work Transfers Energy

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Net Work and the Work-Energy Theorem

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7

Summarizing Kinetic Energy and the Work-Energy Theorem

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8

Work Done Against Gravity

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Converting Between Potential Energy and Kinetic Energy

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Using Potential Energy to Simplify Calculations

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11

Summarizing Gravitational Potential Energy

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12

Potential Energy and Conservative Forces

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Potential Energy of a Spring

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Conservation of Mechanical Energy

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15

Summarizing Conservative Forces and Potential Energy

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Nonconservative Forces and Friction

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How Nonconservative Forces Affect Mechanical Energy

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How the Work-Energy Theorem Applies

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Applying Energy Conservation With Nonconservative Forces

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20

Summarizing Nonconservative Forces

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21

Law of Conservation of Energy

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22

Other Forms of Energy Than Mechanical Energy

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23

Some of the Many Forms of Energy

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Transformation of Energy

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25

Efficiency

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26

Summarizing Conservation of Energy

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What is Power?

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Calculating Power From Energy

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Examples of Power

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30

Power and Energy Consumption

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31

Summarizing Power

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Energy Conversion in Humans

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Power Consumed At Rest

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Power of Doing Useful Work

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35

Summarizing Work, Energy, and Power in Humans

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Renewable and Nonrenewable Energy Sources

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The World’s Growing Energy Needs

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Energy and Economic Well-Being

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39

Conserving Energy

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40

Summarizing World Energy Use

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