The compression ratio of a certain diesel engine is 15 to 1. this means that in the compression stroke the air in the cylinder is compressed to 1/15 of its initial volume. if the initial pressure is 10^5 pa and the initial temperature is 300 k, find the final pressure and temperature after compression. air is mostly a mixture of diatomic oxygen and nitrogen, so treat it as an ideal gas with (gamma)=1.4 . take the process to be adiabatic and reversible.