A point charge of +Q is placed
o* ju.m2q3zxi-6assk at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed a
kima63-jo u*q 2z.ssxt one of the other vertices?