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13 Cards in this Set
- Front
- Back
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the transfer of kinetic energy when particles collide
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conduction
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the state at which:
-the rate of energy flow between two objects is equal -the objects are at the same temperature |
thermal equilibrium
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the motion of fluid in a liquid or gas caused by temperature differences
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convection
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transfer of energy by electromagnetic waves
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radiation
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amount of energy that must be added to the material to raise the temperature of a unit mass by one temperature unit
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specific heat
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Q= mCAT= mC(Tf-Ti)
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heat transfer equation
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Ea+Eb= constant
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conservation of energy
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-the amount of energy needed to melt 1kg of a substance
-Q=mHf |
heat of fusion
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-the thermal energy required to vaporize 1kg of a substance
-Q=mHv |
heat of vaporization
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the change in thermal energy of an object is equal to heat that is added to an object minus the work done by the object.
^U=Q-W |
first law of thermodynamics
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device that is able to continuously convert thermal energy to mechanical energy
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heat engine
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measure of disorder in a system
(change in entropy: ^S=Q/T) |
entropy
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states that natural processes go in a direction that maintains or increases the total entropy of the universe.
(all things will become more and more disordered unless an action is taken to keep them in order) |
second law of thermodynamics
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