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Work, Energy and Energy Resources

40 Lessons 2 hours

Explore the principles of work and energy, including how to calculate work, the work-energy theorem, gravitational and potential energy, nonconservative forces, and the law of conservation of energy, as well as examining different forms of energy, power, and energy consumption in humans and the world at large.

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Tutorial Lessons

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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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