These 2 questions I found in the textbook and I can't do it. We are learning this tomorrow and I am wanted to do some problems ahead of time. Hope someone can help me.

(2) The drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right side. The initial speed of the electron is 7.00 x 10 m/s. The capacitor is 2.00 cm long, and its plates are separated by 0.150 cm. Assume that the electric field between the plates is uniform everywhere and find its magnitude. 2.00 cm + + + + + 0.150 cm (3) The drawing shows two positive charges q1 and q2 fixed to a circle. At the center of the circle, they produce a net electric field that is directed upward along the vertical axis. Determine the ratio (q2//|q1| of the charge magnitudes. 30.0% 60.0 92 91