First slide

Fundamentals of thermodynamics

Question

The work done on a gaseous system is 12 J and also 20 J of heat is added to it. The change in internal energy of the gaseous system is

Moderate

A

8 J
B

32 J
C

12 J
D

20 J

Solution

$Δ U = q + w = 20 J + 12 J = 32 J$

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