Question

Iwo particles, with charges of q1-90.U nC and q2 =-90.0 nC, are placed at the points with coordinates (0, 12.00 cm) and (0,-12.00 cm) as shown in the figure below. A particle with charge q3-45.0 nC is located at the origin. (a) Flnd the electric potentlal energy of the conflguratlon of the three fixed charges (b) A fourth particle, with a mass of 2.28 x 10-13 ka and a charge of q4 = 180.0 nC, is released from rest at the point (9.00 cm, 0). Find its speed after it has moved freely to a very large distance away m/s

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Answer #1

For a single pair Potential energy=(kq1q2)/r. We will do this for each pair.

u redi 0 9 9 (b 2 2

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