Amarble is positioned in a and is allowed to move down the track to b and is able to reach point c. which of the following statements is true?

a. the marble has the greatest kinetic energy at point a.
b. the marble has the greatest potential energy at point b.
c. the potential energy of the marble at point a is twice the potential energy at point c.
d. all statements are true.

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Which law represents a balanced chemical equation?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.