A prime mover applies a torque of 500 in-lbs to a hydraulic pump running at 2000 rpm (pump efficiency is 85%, meaning that only 85% of the input mechanical power is converted into hydraulic power). The pump is pushing the fluid (S.G = 0.8, Kinematic Viscosity = 1 St) through a steel pipe (ID = 2 in.) into the atmosphere and the pump outlet pressure is 500 psi. Find the length of the pipe in feet.