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QUESTION
An alpha particle (m = 6.7 10-27 kg, q = +3.2 10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops.
An alpha particle (m = 6.7 ´ 10-27 kg, q = +3.2 ´ 10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this motion. Determine the electric potential difference VA - VB.
