Water enters a rotating sprinkler through its base at a steady rate of 900ml/s. The exit area of each of the two nozzles is 15.0mm^2, and the flow leaving each nozzle is in the tangential direction. the radius from the axis of rotation to the center of each outlet is, R=245 mm. If the resisting torque on the base, due to friction force, is 0.45 N*m, what is the speed (in rpm) of the sprinkler? Let a=45 degrees, and density p=1000kg/m^3