Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges 65 C, -44 C, and 52 C, respectively. Each sphere is separated by 17 cm. 2 3 (a) What is the net electric force on the middle sphere due to spheres 1 and 3? (Enter the magnitude only.) 4.36e6 X How do you calculate the electric force? If the spheres all lay along the same line, how do you calculate the net force? Did you convert all your units to SI? N (b) What is the direction of the net electric force? O up Odown left Oright O no direction (zero magnitude) X