If `50` calories are added to a system and system does work of `30` calories on surroundings, the change in internal energy of system is

If 50 calorie are added to a system and system does work of 30 calorie on surroundings, the change in internal energy of system is:

If 50 calorie are added to a system and system does wark of 30 calorie on surroundings, the change in internal energy of system is

If 500 calorie of heat energy are added to a system and the system does 350 calorie of work on the surroundings, what is the energy change of the system?

A system 500 j or heat and does work of 50 j on its sourroundings. Calculate the change in internal energy.

A system absorbs 640 J heat and does work of 260 J, the change in internal energy of the system will be :

If "10" calorie of heat energy is added to a system and the system does "5" calorie of work on the surroundings,What is the energy change of the system?

A system absorbs 400 J of heat and does work equivalent to 150 J on the surroundings. Calculate the change in the internal energy of the system.

A system absorbs 50 kJ heat and does 20 kJ of work. What is the net change in the internal energy of the system ?