1. The figure represents a neutral He atom with two electrons on either side of the nucleus, in a well-defined circular orbit of radius 2. 64 x 10 4 There are two protons in the nucleus. Calculate the magnitude and direction of the electric force on each electron. He 2 p 2. Box A, 2.5 kg, is connected by a rope that passes over a frictionless pulley to Box B, 5.5 kg, as shown below. The coefficient of kinetic friction between 6 the box and the ramp is 0.54. a) Draw free body diagrams for each box. b) Determine the acceleration of the boxes. c) Determine the tension in the rope. A B 250