A pipe is 39 m long and 150 mm in diameter and has water flowing through it at a rate of 0.175 m3 /s. The pipe has its inlet 12 m below its outlet and somewhere along the pipe is a valve with a loss of 0.4(c2/2g ) (40 % loss of velocity head) . If the friction loss per meter run of pipe amounts to 0.149 m, determine the change in static pressure (kPa) between the inlet and the outlet, neglect the length of the valve.

Water enters a 10-cm-diameter pipe steadily with a uniform velocity of 3 m/s and exits with the turbulent flow velocity distribution given by u = umax (1- r/R)1/7. If the pressure drop along the pipe is 10 kPa, determine the drag force exerted on the pipe by water flow.

Water flows at 0.71 m/s through a pipe 15 cm in diameter when the pressure is 37000 Pa. Determine the water velocity & the pressure in the pipe be if it shrinks down to 4 cm in diameter. You can assume that the pipe is horizontal & ?water = 1000 kg/m3.

water flows at 0.68 m/s through a pipe 10 cm in diameter when the pressure is 31000 Pa. Determine the water velocity and the pressure in the pipe be if it shrinks down to 5 cm in diameter. You can assume that the pipe is horizontal and Pwater = kg/M^3.