Suppose that, as a function of x, y, and z, an electric field has the following components: Ex = 6x2y, Ey = 2x3 + 2y and Ez = 0 where E is measured in V/m and the distances are measured in m. Find the electrical potential difference between the origin and the point x = -0.1 m, y = 3.9 m, z = 0.0 m.

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)