2. (40 points) Equipotential Next Page re shown in the figure below. C B X 10 V 20 V A 30 V 40 V Figure 2: Equipotential contours. a. (10 points) We are told that a proton has a speed of 105 m/s at point A. It is later measured to be at point B. What is its speed at point B? b. (10 points) Later, the proton is measured to be at point C-what is the proton's speed here?c. (10 points) Draw the electric eld vector at the point X. Give your reasoning for your answer in the space provided below. (1. (10 points) Consider the case where an electron is initially at point B with a speed vi. What must 121- be such that the electron has a speed at point A that is equal to the speed of the proton at point B that you found at in part (a)