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# chapter6 - Chapter6 PowerandEnergy WhatYouNeedtoKnow...

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Alta Physics Chapter 6 Power and Energy What You Need to Know

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Alta Physics Energy Facts There are different types of energy  Energy of all types is measured in  Joules Law of Conservation of Energy –  Energy can be neither created nor  destroyed, merely changed from one  form to another
Alta Physics Types of Energy (Unit Overview) Mechanical Potential Energy Energy of Position Gravitational Elastic Kinetic Energy Energy of Motion If it moves it has kinetic energy Heat Energy Heat is a form of Energy Transfer Other Forms of Stored Energy Chemical Fuels - usually release energy by combustion Food – energy released by digestion Electrical Generated from other forms of energy

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Alta Physics Work The Physics definition of work requires  displacement,  i.e. an object must be  moved in order for work to be done! The Applied force which causes the  displacement contributes to the work,  i.e. in order to contribute to the work,  the  applied force must be parallel  to the  displacement.
Alta Physics Work: A Mathematical Definition Work = (Force)(Displacement) Units of Work =  (Newton)(Meter) 1 Newton•Meter = 1 Joule

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chapter6 - Chapter6 PowerandEnergy WhatYouNeedtoKnow...

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