Which one of the following accurately describes the force of gravity?

a. the force of gravity is slightly lower at the bottom of a mountain than it is at the top.
b. the gravity acceleration has no effect on a body moving in directly the opposite direction of the force of gravity.
c. the gravity acceleration is in the same direction as the force of gravity, and thus toward the center of the earth.
d. the gravity acceleration is in the same direction as the force of gravity, and thus away from the center of the earth.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.