A10 m^3 rigid container is filled with water at a quality of 0.7 and a pressure of 5 mpa. it is then cooled until its pressure is reduced to 500 kpa. determine the mass of water that change from vapor to liquid in the container due to the cooling process.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)