HELP plz ;) The law of universal gravitation is an inverse square law in regards to distance. Which of these statements best describes this law?
(A )If the distance increases by some factor, the force will decrease by the square of that factor.
(B) If the distance increases by some factor, the force will decrease by the same factor.
(C) If the distance increases by some factor, the force will increase by the square of that factor.
(D) If the distance increases by some factor, the force will increase by the same factor.

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.