A point charge of +Q is placed at the center of a square, and a second point ch
jf r15f c3yrx9z 3 pox.p1-zhgarge 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
fx rpp-g 313rf zxo519.z yhjcof the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?