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An ionized oxygen molecule (O2+) at point a has a charge +e and moves at 2.00...

An ionized oxygen molecule (O2+) at point a has a charge +e and moves at 2.00 x 10^3 m/s in the positive x-direction. A constant electric force in the negative x-direction slows the molecule to a stop a point B, a distance of 0.750 mm past A on the x-axis. Calculate (a) the x-component of the electric field and (b) the potential difference between points A and B.

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