A point charge of +Q is placed at the center of a square, and a second point ch
.a0dn**o :,a,rs ft(uoyhnfi a87blfe 0qz4b arge 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.
f,,deabq7*8:( tr4hfn a*o0n.bfuo0yiz sl aWhat is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?