1. The problem statement, all variables and given/known data Two parallel plates labelled W (negative) and X (positive) are separated by 5.2 cm. The electric potential between the plates is 150 V. An electron starts from rest at time tw and reaches plate X at time tx. The electron continues through an opening in plate X and reaches point P at time tP. Determine the speed at tx and tP e = -1.6 x 10-19 C me = 9.1 x 10-31 2. Relevant equations V = kq1 / r ΔV = ΔE/q ε = ΔV / r Ek = 0.5mv2 3. The attempt at a solution I'm not sure how to determine v at tw and tx, but I did find the field strength: ε = 2884.6. We also know the electron starts from rest, so we could use the conservation of energy law to generate the following eq'n. v2 = 2m-1kq1q2(ra-2 - rb2). But we don't have a "q2" so I'm quite lost. Any help is appreciated! God bless and thanks!