What is the amount of heat absorbed if two litres of an ideal gas at a pressure of 10 atm expands isothermally into a vacuum until its total volume becomes 10 liters?

Consider a circular hollow tube made of steel which is used for supporting a compressive load of 600 kN. The inner diameter of the tube is 90 mm and the outer diameter is 130 mm. What is the compressive stress, if the length of the tube is 1000 mm?

In relation to bending stress, what is the correct value of bending or flexural modulus (Eb), if P is the normal force, L is the beam length, w is the beam width, t is the beam thickness, and y is the deflection at load point?

Which option can be exchanged in a closed system?

Express the change in internal energy of the system when no work is done on the system but a certain amount of heat, say q, is taken out from the system and given to the surroundings.

Consider the two timber posts that measure 150 millimeters square and 4 meters high. These posts are subjected to an axial load of 108 kN each. How much will they be shorten because of the load, if one post is made of pine timber (E = 7800 MPa)and the other of Australian blackwood (E = 15300 MPa)?

When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of

The force in member U2L2 of the truss shown in below figure, is

The coefficient of friction depends upon

The intensity of direct longitudinal stress in the cross-section at any point distant r from the neutral axis, is proportional to