Question
State whether each of the following will increase or decrease the total energy content of the system:
(i) heat transferred to the surroundings
(ii) work done on the system
(iii) work done by the system.
Solution
(i) When heat is transferred to surroundings the total energy content of the system decreases.
(ii) When work is done on the system, the energy content of the system increases.
(iii) When work is done by the system, the energy content of the system decreases.
