A point charge of +Q is placed at the ce
f2vbeak*.c0dy7i wfs ouy0 -:- rb*ygnter of a square, and a second point 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 force that acts on the center cha
dgk v*fr0ew2.ua0iyb*c:yo byfs 7- -rge if a third charge of -Q is placed at the lower-left corner?