20 POINTS! Please help I need help with 22 and 21
21. Which letter represents where the marble has
the greatest kinetic energy? A, B,C or D.
22. If you neglect friction. The gravitational
potential energy of the marble at the start is
the kinetic energy of the marble at the
end.
a.
greater than
b. less than
c. equal to

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

What are the factors that affect the resistance of a wire?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.