A given system undergoes a change in which work done by the system equals decrease in its internal energy. The system must have undergone an

Is the heat supplied to a system always equal to the increase in its internal energy?

In a process , 701 j of heat is absorbed by a system and 394 j of work is done by the system. What is the change in internal energy for the proces ?

Fill in the Blanks: If a system is thermally insulated, there is _____ in internal energy of the system.

A system goes from P to Q by two different paths in the P−V diagram as shown in Figure. Heat given to the system in path 1 is 1000 J. The work done by the system along path 1 is more than path 2 by 100 J. What is the heat exchanged by the system in path 2?

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

Which of the following change is observed occurs when a substance X is converted from liquid to vapour phase at the standard boiling point? I. Potential energy of the system decreases II. The distance between molecules increases III.The average kinetic energy of the molecules in both phases are equal

In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, an amount of work equal to 22.3 Jis done on the system. If the gas is taken from state A to B via a process in which the net heat absorbed by the system is 9.35 cal, how much is the net work done by the system in the latter case ? (Take 1 cal = 4.19 J)

Three charges -q, Q and -q are placed at equal distances on a striaght line. If the potential energy of the system of three charges is zero, then what is the ratio of Q:q?