1. With charge q, at the origin and charge qz at (x, y) - (10 cm, 0), the electric field from those two charges goes to zero at (x, y) - (15 em, 0). If charge q: - 3q2 is now placed at (x, y) - (xo, yo), the electric field due to all three charges goes to zero at (x, y) - (18 em, 6 cm). Find the values of xo and yo. (25 pts)