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Posted by on Friday, July 6, 2012 at 10:34pm.

What must be the distance in meters between point charge q1 = 25.6 µC and point charge q2 = -69.6 µC for the electrostatic force between them to have a magnitude of 8.50 N?

  • College Physics - , Saturday, July 7, 2012 at 4:15am

    k =9•10^9 N•m²/C²
    F=k•q1•q2/r²
    r=sqrt(k•q1•q2/F)=
    =sqrt(9•10^9•25.6•10^-6•69.6•120^-6/8.5)= .....

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