Asmooth flat plate of length l = 6 m and width b = 4 m is placed in water with an upstream velocity of u = 0.5 m/s. using water properties at 300 k and assuming a laminar boundary layer, determine the boundary layer thickness and the wall shear stress (local value) at the center and at the trailing edge of the plate. determine also the average shear stress and the drag due to friction. was it a good assumption to assume that the boundary layer is laminar?

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.