a. If two electrons are each 2.30Ă—10^(-10) m from a proton, as shown in the figure, find the magnitude of the net electrical force they will exert on the proton. (Express your answer in newtons.)
b. Find the direction of the net electrical force electrons will exert on the proton.
(Enter your answer as an angle measured relative to the line connecting the proton and the right electron with counterclockwise being positive.)