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A charged particle(m=10.55g, q= -7.22 μC) localized at a point A has a speed of 0.86m/s....

A charged particle(m=10.55g, q= -7.22 μC) localized at a point A has a speed of 0.86m/s. This is moving to point B where the electric potential is 250v higher then in point A. What is the kinetic energy of the particle when it reaches B? (assume that only electric forces are acting on the particle).

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