A car engine has a compression ratio of $10$:$1.$ If the air$-$fuel mixture at the beginning of compression is at $14\mathrm{.}7$ psi $($pounds per square inch$),$ what is the pressure at the end of compression assuming adiabatic compression? Explain the significance of compression ratio in engine performance.

A car engine has a compression ratio of $10$:$1.$ If the air$-$fuel mixture at the beginning of compression is at $14\mathrm{.}7$ psi $($pounds per square inch$),$ what is the pressure at the end of compression assuming adiabatic compression? Explain the significance of compression ratio in engine performance.