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## Homework Statement

two point charges in free space are separated by distance d and exert a force 2.6 nN on each other. The force becomes 1.5 nN when the free space is replaced by a homogeneous dielectric material. Calculate the dielectric constant of the material.

## Homework Equations

I used an equation but i did not write it down so I am not totally sure what I used

## The Attempt at a Solution

2.6=(9E9)Q^2/d^2 then Q=.000016997d then 1.5=(.000016997d)^2(9e9)/(epsilonr) then epsilonr=1.73 now I have a couple of problems with what I did first I believe I have only found for the relative dielectric constant rather than the dielectric constant. An the second problem is that I did not convert nano Newtons to Columbs/m^2N^2 as I wasnt sure of the conversion I searched on google and couldn't find it?