What happens to the gravitational force between two objects if: a. the mass of one is doubled?
b. The masses of both are doubled?
c. The distance between them is doubled?
please answer as many as posible

The amount of potential energy possessed by an elevated object is equal to what?

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.

Which word expression describes how much to calculate pressure