During compression of a spring the work done is 10 KJ and 2 KJ escaped to the surrounding as heat. The change in internal energy, ∆U (in KJ) is:

During compression of a spring the work done is 10 KJ and 2 KJ escaped

1.	During compression of a spring the work done is 10 KJ and 2 KJ escaped to the surrounding as heat. The change in internal energy, ∆U (in KJ) is:
A.	-12
B.	-8
C.	8
D.	12
Answer» D. 12