In a heat engine, 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 1200 J?
Responses
300 J
300 J
900 J
900 J
1100 J
1100 J,
1500 J
To find the final internal (thermal) energy of the system, we can start by using the first law of thermodynamics:
Change in internal energy = Heat added - Work done
Change in internal energy = 700 J - 400 J
Change in internal energy = 300 J
The final internal (thermal) energy of the system is 300 J.
Therefore, the correct response is: 300 J