Two balls with charges q1 = 7 nC and q2 = 15 nC are at a distance of r1 = 40 cm.
| September 25, 2021 | education
Two balls with charges q1 = 7 nC and q2 = 15 nC are at a distance of r1 = 40 cm. What work should be done to bring them closer to a distance of r2 = 25 cm?
Work on moving a charge in an electrostatic field:
A = (6.66 * 10 ^ -9 * 13.33 * 10 ^ -9) / (4 * 3.14 * 8.85 * 10 ^ -12);
A = 1.2 * 10 ^ -6 J.
Answer: A = 1.2 * 10 ^ -6 J.
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