Two charges are separated by a distance of r. The distance between the charges is tripled to 3r. If the original force between the charges was 45 N, what is the new force between the charges?

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter