In a 200-horsepower pump installed in a long pipeline the increase in kinetic energy of the oil is 8.4 kJ/s-kg but the potential energy change is negligible. If the temperature of the oil increases by 8oC and the oil may be considered as incompressible with a density of 860 kg/m3 with a specific heat of 1.909 kJ/kg-K. The difference in pressure between the inlet and the outlet is 12 kPa. Determine the mass flow rate of the oil