A system absorbs 100 kJ heat and performs 60 kJ work on the surroundings. The increase in internal energy of the system is
40 kJ
160 kJ
100 kJ
4000 kJ
A system performs 101.3 J of work on its surrounding and absorbs 15 KJ of heat from surroundings. The change in internal energy of the system is:
A system absorbs 20KJ of heat and also does 10KJ of work. The net internal energy of the system: