An iron nail is driven into a block of ice by a single blow of a hammer. The hammerhead has a mass of 0.3 kg and an initial speed of 2.1 m/s. Nail and hammer are at rest after the blow. How much ice melts? Assume the tempera ture of both the ice and the nail is 0C before and after. The heat of fusion of ice is 80 cal / g. Answer in units of g. 014 10.0 points How much energy is required to change a 35 g ice cube from ice at 15C to steam at 11930? The specic heat of ice is 2090 J / kg - C, the specic heat of water is 4186 J/kg - C, the specic heat of stream is 2010 J/kg - C, the heat of fusion is 3.33 X 105 J /kg, and the heat of vaporization is 2.26 x 106 J/kg. Answer in units of J