A well 300 ft deep is proposed in an aquifer having transmissibility of 12000 gpd per foot width of aquifer and a coefficient of storage of 0.006. The static water level is expected to be 100 feet below the ground surface, the well is pumped at 600 gpm and the well diameter is to be 12 inches. What will be the pumping lift from the well at the end of 2 years

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)