Electrostatics coulomb's law problem

[meme06]

Homework Statement

how to use coulomb's law to find the r value of the three points when the total distance is 50 cm

Homework Equations

f=Kqq/r^2

The Attempt at a Solution

i assumed that is it was uniform and sais r1+r2=r3 but now i think that is wrong

 

[KoGs]

By "three points" do you mean "three charges" ? There is one key concept you must use when dealing with charges, that is the concept of superposition.

 

[OlderDan]

Homework Statement

how to use coulomb's law to find the r value of the three points when the total distance is 50 cm

Homework Equations

f=Kqq/r^2

The Attempt at a Solution

i assumed that is it was uniform and sais r1+r2=r3 but now i think that is wrong

We cannot help you without a clear statement of the problem you are trying to solve.