A 68 gram superball is projected horizontally from a height of 2.5 meters above a table the ball bounces off the table to a height of 1.2 meters above the table. What is the kinetic energy lost due to the collision with the table? J Much help appreciated thanks!

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.