Consider a PV-diagram in which the path followed by one mole of perfect gas a cylindrical container is shown in (fig.).

Find the work done when the gs is taken from state 1 to state 2.

Consider a PV-diagram in which the path followed by one mole of perfect gas a cylindrical container is shown in (fig.). Given to internal enregy for one mole of gas at temperature T is (3 // 2) RT,find the heat supplied to the gas when it is taken from state 1 to 2,with V_2=2V_2 .

Consider a PV-diagram in which the path followed by one mole of perfect gas a cylindrical container is shown in (fig.). What is the ratio of temperature T_1 // T_2 ,if V_2 = 2V_1 ?

A cycle followed by an engine (made of one mole of an ideal gas in a cylinder with a piston) is shown in the figure. Find heat exchanged by the engine, with the surroundings at constant volume of the cycle. (C_v = (3/2) R)

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)

In each of the following a force,F is acting on an object of mass,m. The direction of displacement is from west to east shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative,positive or zero.

The velocity-time graph of particle in one dimensional motion is shown in the fig. Which if the following formulae are correct for describing the motion of the pawrticle over the time interval t_1 to t_2 v(t_2) = v(t_1) + a(t_2 - t_2) , v_(average) = ([x(t_2) - x(t_1)])/((t_2 - t_1)) , x(t_2) - x(t_1) = area under the v - t curve. bounded by the t-axis and the dotted line shown.

A small retangular coil ABCD contains 140 turns of wire. The sides AB and BC of the coil are of length 4.5 and 2.8 cm respectively, as shown in the figure The coil is held between the poles of a large magnet so that the coil can rotate about an axis thorugh its centre. The magnet produces a uniform magnetic field of flux density B between its poles. When the current in the coil is 170 mA, the maximum torque produced in the coil is 2.1 xx 10^-3 N m . For the coil in the position for maximum torque, state whether the plane of the coil is parallel to, or normal to , the direction of the magnetic field.