A fluid flows by gravity down an 8-cm galvanized iron pipe. The pressures at the higher and lower locations are 120 kPa and 140 kPa, respectively. The horizontal distance between the two locations is 30 m, and the pipe has a slope of 1m rise per 10 m of run (horizontal distance). For a fluid with a kinematic viscosity of 10-6 m2 /s and a density of 900 kg/m3 , determine the flow rate (in m3 /s).