Charge q1=2nC is at x1=0 and change q2=3.50nC is at x2=3.50m. At what point between the 2 charges is the electric field equal to zero?

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.