A region of space has a uniform electric field generated by two parallel plates that carry equal but opposite charges. A point charge of magnitude |q| is moved by a hand from position A to position B at a constant speed. In that move, the charge experiences a positive change in electric potential and the work done by the hand on the charge is negative. What is the sign of the point charge and which of the two plates is positive one

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.