1) what is the potential energy at the end of the loop? 2)what is the kinetic energy at the end of the loop(based upon photogate time?

release the car and record the time from the photogate at the bottom of the hill and answer the top questions:
i attached an image that shows the recorded time

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 starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

Contains chemical energy. a. heat b. light c. natural gas