4-7. Water is pumped through a 1-in schedule 40 pipe (internal diameter = 1.049 in) at 400 gal/hr. If the pressure at one point in the pipe is 103 psig and a small leak develops 22 ft downstream, compute the fluid pressure at the leak. The pipe section is horizontal and without fittings or valves. For water at these conditions the viscosity is 1.0 centipoise and the density is 62.4 lb/ft. Assume new, commercial steel pipe