Weather in a flocculation tank is mixed using paddles with a tip velocity of 0.41 m/s. The temperature in the is 20C. The total combined projected area of the paddles is 10 m^2, the value of the constant a is 0.75, and the coefficient of drag is 1.6. If the motor effieciency is 90%, and the brake efficiency is 75%, what is the power input required to the motor? Look up the water parameters required.