A point charge of +Q is placed at the cent
,mwk m mlc 8vf0jj0r2kih21m) er 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 i
m 1k,jcwmmirjl20)8m0kv2f hs the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?