Two particles are separated by a distance d. at this distance, the strong interaction between them is much greater than the electrical interaction. what are the possible values of d?

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."