ENERGY TRANSFERS IN A SYSTEM
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What is the rule for energy transfers
energy can be transferred usefully, stored or dissipated, but cannot be created or destroyed
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What is wasted energy known as
energy that is dissipated, stored in usefulness ways
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How can we reduce unwanted energy transfers
lubrication, thermal insulation
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What is thermal insulation
brick, wood and glass used to decrease the amount of heat dissipated to surroundings
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What is conduction
process where heat is transferred through collisions
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What is an insulator
a material that will not allow energy to flow through easily
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How is thermal conductivity and rate of energy transferred link
the higher the thermal conductivity, the higher the rate of energy transfer by conduction across the material
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