A square with each side of length 0.15 m has four charges fixed in place at each corner. At two of the corners we have a negative charge of -2.0 microcoulombs, while a third corner has a positive charge of +6.0 microcoulombs. In the final corner there is a different charge q.
i) If the total force acting on the q charge has a magnitude of 7.5N, then what is q? (Use non-calculus based method)
ii.)The charge q is replaced by a new charge and now the +6.0 microcoulombs charge feels a 9.2N force attracting it to the center of the square. What is the new unknown charge?(Use non-calculus based method)