Objective: To understand and perform calculations using fundamental mechanical relations in thermodynamics. $($CLO $1\mathrm{.}1,1\mathrm{.}2)$

$.$Each Question Carries $1$ Mark

Problem $1($thought problem$)$ Consider two ways in which you might add energy to a gas inside a piston: $(1)$ compressing the gas to a smaller volume, and $(2)$ heating the gas by raising the temperature of the piston. If you were able to zoom in and watch these two process at the molecular level, both would involve the transfer of kinetic energy due to collisions between moving and vibrating atoms in the piston with atoms in the gas $($similar to billiard balls$).$ What, therefore, is the difference between compression and heating at the molecular level? $($CLO $1\mathrm{.}1)$