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11 Cards in this Set
- Front
- Back
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Are any devices 100% efficient?
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NO!! No device is 100% efficient and wasted energy is always dissipated as heat
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Why is it wasted energy?
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We can't do anything with useful it!
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What is an energy transfer system?
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Things/ devices that transfer energy into other forms
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What is the energy transfer system of a mic/ amp/ speaker?
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Sound -> electrical -> sound
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Energy transfer system of TV?
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Electrical -> Light and sound
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Energy transfer of Toy Car batteries?
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Chemical -> electrical -> kinetic, sound, heat, light
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Energy transfer of battery charger?
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Electrical -> chemical
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What do GPE and Elastic potential always get converted into first?
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KINETIC!!
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Energy transfer of crane
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Chemical (battery) -> Kinetic --> GPE
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Energy transfer system of falling object?
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GPE --> Kinetic
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Energy transfer system of Archer/ bow
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Chemical -> elastic potential -> kinetic
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