Each electron has a charge of -1 and each proton has a charge of 1+. What are the charges of sodium and chlorine? Help please :(

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

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

When a pair of 10-n forces act on a box of candy, the net force on the box is a 20 n. b about 14 n. c zero. d any of the above depending on the directions of forces.