Gas does 50J work during adiabatic expansion then cools removing 20J. What is the total internal energy change
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Gas does 50J work during adiabatic expansion then cools removing 20J. What is the total internal energy change

[From: ] [author: ] [Date: 11-12-29] [Hit: ]
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Adiabatic means dQ =0

hence - du = dw .

Hence - du = 50 J
The internal energy falls by 50 J

Further fall of 20J means total fall of internal energy is 70 J
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work done=50J
while cooling it loses=20J
internal energy CHANGE=50+20=70J
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