A point charge of +Q is placed at the center of a square, and a second poin
i3 p,hgkk r1 /ze,2ui;sv0 mdrt charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the forc
hvke1d2g 3pum0 i,zir;/sk,r e that acts on the center charge if a third charge of -Q is placed at the lower-left corner?