SET B 1. Two protons are fired directly at each other in a vacuum chamber. What is the force each experiences at the instant they are 1.0 X 10 '14m apart. 2. At a given instant three electrons, 'n vacuum, happen to lie on a straight line. The first and second are separated by 1.0 X 10- m, while the 2"d and 3rd are 2X10 '6 m apart. What is the electrostatic force in the middle electron, the 2"d one