1. An ionized oxygen molecule (O₂⁺) at point A has charge +e and moves at 1.80 ? 10³ m/s in the positive x-direction. A constant electric force in the negative x-direction slows the molecule to a stop at point B, a distance of 0.901 mm past A on the x-axis. Calculate the x-component of the electric field and the potential difference between points A and B. (The mass of an oxygen molecule is 5.31 ? 10^?26 kg and the fundamental charge is

e = 1.60 ? 10^?19 C.)

HINT

(a)the x-component of the electric field (in V/m) V/m

(b)the potential difference between points A and B (in V) V

A point charge q : +430 pC moves from A to B separated by a distance d : 0.184 rn in the presence df an external electric field E of magnitude 245 MC directed toward the right as in the following figure. if .> A B 9 + 9|