Glycerin at 40C with = 1252 kg/m 3 and = 0.27 kg/ms is flowing through

Glycerin at 40°C with ρ = 1252 kg/m³ and μ = 0.27 kg/m·s is flowing through a 2-cm-diameter, 25-m-long pipe that discharges into the atmosphere at 100 kPa. The flow rate through the pipe is 0.048 L/s.

(a) Determine the absolute pressure 25 m before the pipe exit.

(b) At what angle θ must the pipe be inclined downward from the horizontal for the pressure in the entire pipe to be atmospheric pressure and the flow rate to be maintained the same?