Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 21 - Coulomb's Law - Problems - Page 626: 19b

Answer

The y-coordinate of particle 3 is zero.

Work Step by Step

If the net electrostatic force on particle 3 due to the other two particles is zero, then the force vectors due to the other two particles must point in opposite directions. This is only possible if particle 3 is located on the x-axis. Therefore, the y-coordinate of particle 3 is zero.
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