A point charge of +Q is placed at
qt-mtub .)sxujf:mb-w + 2fiz4y e7.tthe center 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 ce
:.zte uq7 ywxifjmt.umb-+tsb2 ) -4fnter charge if a third charge of -Q is placed at the lower-left corner?