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

the answer would be 1,500 J or 1,700 J -which ever one is there-

1 a

2 c

3 c

4 b

5 a

hope this

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