Helppp pls A rock rests on the ground. A force pulls the rock toward the earth, and another force pulls the rock toward the moon. Why does the rock stay on the ground?

A. The force pulling the rock toward the earth is weaker than the force pulling the rock toward the moon.

B. The rock is moving, but it's not visible to the human eye.

C. Only one force can act on an object at one time.

D. The force pulling the rock toward the earth is greater than the force pulling the rock toward the moon.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.