In this lesson, we will learn how to relate the net work done on and the change in internal energy of a gas with varying bulk properties but zero net heating.
Sample Question Videos
In a diesel engine, the fuel is ignited without a spark plug. Instead, air in a cylinder is compressed adiabatically to a temperature above the ignition temperature of the fuel; at the point of maximum compression, the fuel is injected into the cylinder. Air at a temperature of is taken into the cylinder at a volume and then compressed adiabatically and quasi-statically to a temperature of and a volume . If the ratio of the molar heat capacities of the gas is 1.4, what is the ratio ?
An ideal diatomic gas at a temperature of is slowly compressed adiabatically and reversibly to half its initial volume. What is its absolute temperature after compression?
A monatomic ideal gas with an initial volume undergoes a quasi-static adiabatic expansion. The volume of the gas after its expansion is . If the pressure of the gas before expansion is , what fraction of does the gasses expansion reduce its pressure by?