ch21-p069 - 69. (a) If a (negative) charged particle is...

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69. (a) If a (negative) charged particle is placed a distance x to the right of the +2 q particle, then its attraction to the +2 q particle will be exactly balanced by its repulsion from the –5 q particle is we require 22 52 () Lx x = + which is obtained by equating the Coulomb force magnitudes and then canceling
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