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Important Terms & Notes. Conceptual Physics Mar. 11, 2014. Thermodynamics. The study of heat and its transformation into Mechanical Energy. Absolute Zero. The temperature at which a substance has no kinetic energy per particle (thermal) to give up.
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Important Terms & Notes Conceptual Physics Mar. 11, 2014
Thermodynamics • The study of heat and its transformation into Mechanical Energy.
Absolute Zero • The temperature at which a substance has no kinetic energy per particle (thermal) to give up. • This temperature corresponds to 0° K or -273 ° C.
First Law of Thermodynamics • Heat added to a system is transformed into an equal amount of some other form of energy. • A version of the Law of Energy Conversion ΔQ = ΔEi + W
Adiabatic • The term applied to the expansion or compression of a gas occurring without the gain or loss of heat.
Second Law of Thermodynamics • Heat will never of itself flow from one object to another of higher temperature. • Heat will not flow from Cold to Hot without work being performed.
Heat Engine A Device that Changes Internal Energy into Mechanical Energy
Carnot Efficiency • The Ideal maximum percentage of input energy that can be converted into work in a heat engine. • Ideal Efficiency = (Thot – Tcold)/Thot
Entropy • A measure of the amount of disorder in a system. ΔS = Δ Q/T
System • A group of objects, substances or processes that can perform a function