Definition: When no net energy is exchanged between two objects

Definition: The measure of randomness or disorder in a system

Definition: The difference between the energy transferred to or from a system as heat and energy transferred to or from a system by work is equivalent to the internal energy change

Definition: A heat engine must give up some energy at a lower temperature in order to do work

Definition: Energy sources that can be replaced

Definition: Energy sources that cannot be replaced

Definition: a measure of the average kinetic energy of a substance

Sunlight, water, and wind are all examples of what?

coal, uranium, petroleum are all examples of

The transfer of heat through direct physical contact

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