Suppose you increase the mass of two objects. How would this change the gravitational attraction between them?

Increase gravitational attraction

Explanation: Increasing the mass of two objects will increase the gravitational force of attraction between them, assuming no change in the distance separating them. According to Newton's Law of Universal Gravitation the gravitational force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.