$$ From the general tensor or divergence form of the momentum equation, derived the Navier Stokes Equations for flow in cube tank of Length $=1\mathrm{.}5m,$ which has been fill with water flowing into a tank at mass rate of $500$ liters $\frac{?}{\text{m}\text{i}\text{n}}$ and leaving the tank at rate of $320$ litres $\frac{?}{m}$in