Which two characteristics determine the strength of the gravitational force between two objects?

A. The distance between the objects' far edges

B. The distance between the objects' near edges

C. The objects' masses

D. The distance between the objects' centers

Could someone me with number one you

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule