Homework Statement
q1= 5 x 10^-6C position (1;2,-1)
q2= -3 x 10^-6 C position (-2,1,3)
a) what is the electric force caused by q2 on q1? (vector notation)
b) what is the electric field at (0,0,0)
Homework Equations
F = kq1q2/r^2
E= F/q
The Attempt at a Solution
I really don't...