1. The problem statement, all variables and given/known data The problem asks to find the energy conversion efficiency of a blower-nozzle combination that produces a velocity of 30m/s for air with a density of 1.1kg/mcubed. The nozzle has a diameter of .15m input power is 1 hp 2. Relevant equations given the flow rate = (density)(Area)(velocity) 3. The attempt at a solution I know how to find the efficiency but do not know how to convert flow rate in (kg/s) to Power units in order to use (power out/power in) formula Thanks for your help!