The output work of a machine compared to the input work is the efficiency of the machine.

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

they should be similar or the same

v=ir = 3x15 =45 v

answer; equivalent to a one(1) horsepower motor;