A vessel of volume `V` is evacuated by means of a piston air pump. One piston stroke captures the volume `Delta V`. How many strokes are needed to reduce the pressure in the vessel `eta` times ? The process is assumed to be isothermal, and the gas ideal.

A vessel of volume V is evacuated by means of a piston air pump. One piston stroke captures the volume v_0 . The pressure in the vessel is to be reduced to (1/n) of its original pressure , P_0 . If the process is assumed to be isothermal and air is considered an ideal gas, the number of strokes needed in the process is

A vessel of volume V is evacuated by means of a piston air pump Upon cach double stroke a piston pump sucks in a volume V of air and expels it. The process is assumed to be isothermal, and the gas is ideal. When this pump is used to evacuate the air from a vessel with a volume V, it performs n double strokes. The initial pressure inside the vessel is p_0 which is equal to the atmospheric pressure. (a) Calculate the final pressure inside the vessel.

A gas is enclosed in a vessel of volume V at a pressure P . It is being pumped out of the vessel by mean of a piston-pump with a stroke volume. v . What is the final pressure in the vessel after 'n' strokes of the pump ? Assume temperature reamains constant.

A gas is enclosed in a vessel of volume V at a pressure P . It is being pumped out of the vessel by mean of a piston-pump with a stroke volume. v . What is the final pressure in the vessel after 'n' strokes of the pump ? Assume temperature reamains constant.

A chamber of volume V = 87 1 is evacuated by a pump whose evacuation rate (see Note the foregoing problem) equals C = 10 1//s . How soon will the pressure in the chamber decrease by eta = 1000 times ?