Review the work-energy theorem and apply it to a simple problem. if you push a particle of mass m in the direction in which it is already moving, you expect the particle's speed to increase. if you push with a constant force f, then the particle will accelerate with acceleration a=f/m (from newton's 2nd law).

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.