Calculate the change in internal energy of a system which absorbs 100 J of heat and does 215 J of work.

U_1 , q, w, U_2 are given. U_1 is internal energy, q is absorbed heat, w is work done and U_2 is final energy. a) Derive an equation for DeltaU. b) Give the equation for w. c) Calculate the change in internal energy of a system which absorbs 200 J of heat and 315 J of work is done by the system.

Calculate the change in the internal energy of a system which absorbs '500 J' of heat, and does work equivalent to '200 J' on the surroundigs.

Internal energy U of a system may change when

Express the change in internal energy of a system when (i) No heat is absorbed by the system from the surroundings, but work (w) is done on the system. What type of wall does the system have?

Express the change in internal energy of a system when (ii) No work is done on the system, but q amount of heat is taken out from the system and given to the surroundings. What type of wall does the system have?

Express the change in internal energy of a system when (iii) w amount of work is done by the system and q amount of heat is supplied to the system what type of system would it be?

Some properties of a system are state functions. What is the difference in internal energy of a system, if 100 kJ of energy is radiated out without doing any work?