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 mean square root velocity of the molecules (V_okh=) has changed compared to the final state and the initial state, (V_{okh_final/}V_{okh_first})=?

(vokh=v2) (vokh,ilkvokh,son=?) (vokh=v2) (vokh,ilkvokh,son=?)