1. Examine the charge distribution shown. Sphere 1 has a charge of +3.0 x 10" C; sphere 2 has a charge of -3.0 x 10" C; and sphere 3 has a charge of +3.0 x 10" C. Assume that Coulomb's constant, (k) is equal to 9.0 x 10" Nm Show all your work when completing each of these questions. Z 4.24 m: 4.24 m 3.00 m 3.00 m 3.00 m 91 92 93 a. Determine the total electric potential energy for the charge distribution. b. Determine the total electric potential at point Z