Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are q = 6.30 C, q2 = 1.10 C, 93 -2.20 C. Marble 91 is a distance r =3.00 cm to the left of the marble q, while marble q3 is a distance r3 =2.00 cm to the right of the marble q, as and shown. = 1 K 13 91 observation point 92 93 =0m Calculate the magnitude of the electric field a distance r' = 1.00 cm to the left of the center marble. N/C Another marble is placed 1 cm to the left of the middle marble. If this new marble has a charge of -3.90 C, calculate the magnitude and direction of the force on it. magnitude direction -Select-v N