Two point charges placed at a …
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Sia ? 4 years, 5 months ago
F (air) = (1/4 pi eo) [qQ/r2]
F(medium) = (1/4 pi eo*k) [qQ/R2]
given> F(medium) = F(air)
(1/4 pi eo*k) [qQ/R2] = (1/4 pi eo) [qQ/r2]
(1/k) [1/R2] = [1/r2]
kR2 = r2
R2 = r2/k
R = r/ [rootk]
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