Rearranging Coulomb's law to solve for K

[Lucy573]

Homework Statement

Rearrange F=Kq1q2/r^2 to make K the subject

Homework Equations

The Attempt at a Solution

K=Fr^2/q1q2 - is this correct? Sorry I am new to this! Thanks :)

 

[shallgren]

Yes, that's correct.

 

[Lucy573]

Fab thanks - should have more faith!

 

[shallgren]

If you want to check your answer, just make up values for k, q1, q2, and r and find F. Then use that F along with the same values for q1, q2, and r and see if you get what you assigned to k originally.