Find the rate at which the distance between the buses is changing solutions

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

If you let go of the notebook after lifting it, will it move? how?