For the following questions answer them individually
Two gases X and Y having the same temperature T, the same pressure P and the same volume V are mixed. If the mixture has the volume V and temperature T, then the pressure of the mixture will be:
The piston of a vertical piston-cylinder device containing a gas has a mass of 60 kg and a cross-sectional area 0.04 m$$^2$$. The entire system is placed in a vacuum chamber. If temperature of the gas is $$70^\circ C$$. What is the pressure of gas inside the cylinder? g = 9.8 m/s$$^2$$
A long circular cylinder has a diameter D and length L. The slenderness ratio of the column is: