Internal viscous flows A solar water heater consists of two flat plates that rest on the roof. Water enters at A and exits at B. Starting from the Navier-Stokes equation

develop an equation of motion for the flow between the two plates. Give the appropriate boundary1-conditions 2-Solve the equation to obtain an expression for the velocity between the two plates. If the pressure drop from A to B is 60 Pa,determine the largest gap a between the plates so that the flow remains laminar.For the calculations, assumes the water has an average temperature of 40°C.3-