(Solved): The dimensionless incompressible Navier-Stokes equations can be written as xu+yv ...

The dimensionless incompressible Navier-Stokes equations can be written as $\begin{array}{c}\frac{?u}{?x}+\frac{?v}{?y}+\frac{?w}{?z}=0\\ \frac{?u}{?t}+u\frac{?u}{?x}+v\frac{?u}{?y}+w\frac{?u}{?z}=?\frac{?p}{?x}+\frac{1}{Re}\left(\frac{{?}^{2}u}{?x^2}+\frac{{?}^{2}u}{?y^2}+\frac{{?}^{2}u}{?z^2}\right)\\ \frac{?v}{?t}+u\frac{?v}{?x}+v\frac{?v}{?y}+w\frac{?v}{?z}=?\frac{?p}{?y}+\frac{1}{Re}\left(\frac{{?}^{2}v}{?x^2}+\frac{{?}^{2}v}{?y^2}+\frac{{?}^{2}v}{?z^2}\right)\\ \frac{?w}{?t}+u\frac{?w}{?x}+v\frac{?w}{?y}+w\frac{?w}{?z}=?\frac{?p}{?z}+\frac{1}{Re}\left(\frac{{?}^{2}w}{?x^2}+\frac{{?}^{2}w}{?y^2}+\frac{{?}^{2}w}{?z^2}\right)\end{array}$ where $a,b,c$ and $?$ are constants. a) If $Re?1$, write out the simplified equation. b) If $Re?1$, write out the simplified equation for flow over a flat plate. Note: use the concept of boundary layer over flat plate in Fluid Mechanics.