eguruchela


The First Law Of Thermodynamics


ΔU: change in internal energy, W: work done by the system, Q: heat added into or out of the system


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Application Of First Law To Ideal Gas Laws



Volume is constant


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Pressure is constant, W’: work created by gas


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Temperature is constant


001


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The Second Law Of Thermodynamics



The efficiency of a cyclic heat engine


W’: work carried out per cycle(J), Q1: heat absorbed per cycle from the higher temperature(J), Q2’: heat rejected per cycle to the lower temperature(J)


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Maximum thermal efficiency


T1,T2: higher and lower temperatures


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