A proton whose kinetic energy is 2 x 10 ^- 16J moves to the right along the axis of a cathode ray tube as shown in the figure (figure 3). In the region between the deflector plates there is an electric field of value E = - 2 x 10^4 N/C?? (figure 1) . Elsewhere, E= 0 (figure 2). The pipe axis coincides with the horizontal axis (x) of the chosen coordinate system. Disregard the gravitational force.

a) Find the distance from the axis of the tube where the proton is when it reaches the end of the deflector plates. (Answer: y = 0,64 cm)

b) Determine the angle to the axis of the tube with which the proton exits once it passes through the deflector plates. (Answer: ? = 17.74 )

c) Calculate the distance from the axis of the tube where the proton is when it hits the screen. (Answer: y = 4,48 cm)