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7 Cards in this Set
- Front
- Back
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Stephan boltzmann's law for radiation |
The total energy radiated per unit time per surface area of a black body is proportional to the fourth power of the temperature of the body expressed in Kelvins. . |
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The first law of thermodynamics |
The heat absorbed by a system is partly turned into work done by the system, with the remainder causing an increase in the internal energy of the system. ^Q = ^U + W |
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Adiabatic process |
No heat is transferred to or from the working fluid that is, no heat is gained or lost by the system. ^U = - W |
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Isochoric process (constant volume process) |
The volume of the closed system undergoing such process remains constant. Since the volume is constant the system does no work and W=0 ^U = Q |
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Isothermal process |
The temperature of the system remains constant it is a change in internal energy, heat energy and work. During this process the value ^T = 0 but Q ¬ = 0 (not equal to 0) |
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Isobaric process |
The pressure remains constant. Work is done by the system and heat is transferred. W = P ^V |
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Two isobaric outcomes |
*If the system expands (^V is positive), then the system does positive work. And vice versa. |
