QUESTION 1

In the first law of thermodynamics, , what does Q stand for?

the internal energy of the system

the work done by the piston

the change in the internal energy of the system

the heat added to the system



QUESTION 2

If the thermal energy of the system increases by 400 J, and 1,100 J of heat were added to the system, how much work did the system do?

400 J

700 J

1,500 J

1,100 J