Answer:
-47 J
Explanation:
Given that,
Heat loss = -76 J (negative for loss)
Work done by the surroundings = -29 J
We need to find the change in internal energy of a system.
The first law of thermodynamics is given by :
[tex]\Delta U=Q-W[/tex]
W is work done by the system
Putting all the values,
[tex]\Delta U=(-76)-(-29)\\\\=-47\ J[/tex]
Hence, the change in internal energy is -47 J.
