A2-kg ball rolls at a speed of 10 m/s on the ground. is this an example of kinetic energy, potential energy, or both?

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.

What are the necessary conditions for fusion?

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?