648_Physics ProblemsTechnical Physics

# 648_Physics ProblemsTechnical Physics - 650 P22.45 Heat...

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650 Heat Engines, Entropy, and the Second Law of Thermodynamics P22.45 Sn R V V R f i = F H G I K J == ln ln . 25 7 6 J K There is no change in temperature . FIG. P22.45 P22.46 R V V R f i = F H G I K J = ln . ln 00440 2 2 bg a f S 008808314 2 0507 .. l n . a f JK FIG. P22.46 P22.47 For any infinitesimal step in a process on an ideal gas, dE dQ dW int =+ : dQ dE dW nC dT PdV nC dT nRTdV V VV =− = += + int and dQ T nC dT T nR dV V V If the whole process is reversible, S dQ T nC dT T nR dV V nC T T nR V V r i f V i f V f i f i + F H G I K J = F H G I K J + F H G I K J zz ln ln Also, from the ideal gas law, T T PV f i ff ii = S =⋅ L N M O Q P F H G I K J +⋅ F H G I K J = 100 3 2 8314 200 00400
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## This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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