When the pressure at B is 87 kPa, find the pressure at point A. However, the fluid is assumed to be water at 20∘ C.

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.