Aculvert must carry 4.3 m^3/sec. the culvert length will be 30 m with a slope of 0.3%. if the maximum permissible headwater level is 3.6 m above the culvert invert, what size corrugated-pipe culvert (n=0.025) would you select. the outfall will discharge freely. assume a square-edge entrance (ke=0.5).

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?