Question

In a heat engine, if 700j of heat enters the system, and the piston does 400j of work, what is the final internal (Thermal) energy of the system if the initial energy is 1,200j ?

1) 600J
2) 800J
3) 1,400J
4) 2,000J
plz HELP ME plz and thank so much never mind I got it

Answer 1

what was the correct answer?

Answer 2

The answer is supposed to be 1,500 J but u don't have that ^^up there

Hope i helped^-^