A point charge of +Q is placed at the centroid of an equilat
h g9ok/xr veb9ipyn2 ,t*.z4 ghu8( mgeral 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
o28bh p,/uezki ygx tv4.h*gmn9r(9g acts on the center charge due to a third charge of +Q placed at one of the other vertices?