An electron moving parallel to the x axis has an initial speed of 3.90 x 106 m/s at the origin. Its speed is reduced to 1.20 x 105 m/s a t the poi nt x. Ca l c ul a te the potential difference between the origin and pointx. Which point is at the higher potenti a l

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.