Two solid bodies at initial temperatures T1 and T2, with T1 > T2, are placed in...

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Physics

Two solid bodies at initial temperatures T1 and T2, with T1 >T2, are placed in thermal contact with each other. The bodiesexchange heat only with eachother but not with the environment. Theheat capacities C â‰¡ Q/âˆ†T of each body are denoted C1 and C2, andare assumed to be positive.
(a) Is there any work done on the system? What is the total heatabsorbed by the system? Does the internal energy of each subsystemU1 and U2 change? What about the total internal energy U = U1 +U2?
(b) Calculate the final temperature, Tf , of the system.
(c) Show that T1 > Tf > T2.
(d) With the result of part (b), discuss what happens if C1 = 0or C2 = 0. What about if C1 â†’ âˆž or C2 â†’ âˆž? Interpret yourresults

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4.3 Ratings (776 Votes)

aThere is no work done on the system because here system isneither expanded nor contracted also not displaced so net amount ofwork done equal to zero ie according to the principle of thermodynamics Heat gained byabsorbed by cold bodyHeat lost by hotbodySince heat lost and heat gain both are equal so for the wholesystem total heat absorbed by system willbe also zeroSince temperature of hot body decrease See Answer

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