Water flows at 25 L/s through a gradual contraction, in which the pipe diameter is reduced from 75 mm to 37.5 mm, with a 150 included angle. If the pressure before the contraction is 500 kPa, estimate...

Water flows at 25 L/s through a gradual contraction,

in which the pipe diameter is reduced from 75 mm to 37.5 mm,

with a 150 included angle. If the pressure before the contraction is 500 kPa, estimate the pressure after the contraction.

Recompute the answer if the included angle is changed to

180 (a sudden contraction).