Jeremiah, who has a mass of 60 kg, starts
skating down a hill with a potential energy of
1,200 J. What is the height of the hill?
Round your answer to the nearest whole
number

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.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false

Which system of units is used by only a small number of countries in the world, including the u.s.