The electric field in an xy plane produced by a positively charged particle is 9.64(6.6 + 6.3) N/C at the point (3.9, 5.8) cm and 111 N/C at the point (5.3, 0) cm. What are (in cm) the (a)x and (b)y coordinates of the particle? (c) What is the charge (in Coulombs) of the particle?