Block a slides down a ramp whose slope is 45°. an identical block b slides down a ramp whose slope is 60°. both blocks start at a height of 2 meters. compare the kinetic energies (ke) of the blocks just before they reach the bottom, assuming there is no friction.
a) they are the same
b) block a's pe is greater than block b's pe
c) block b's pe is greater than block a's pe
d) the actual masses must be known in order to figure this out

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.