The number of molecules of a monoatomic ideal gas is N and is constant. In all processes the compression work is quasi-static. The gas is initially at temperature T and expands adiabatically from volume V to volume 2V. Show how much the root mean square velocity of the molecules (Vrms=sqrt(v^2)) changes compared to the final state and the initial state. (Vrms,final / Vrms,initial) = ?