Homework Statement
In the figure above, charge A is -5.00 nC, charge B is 10.0 nC, and charge C is 5.00 nC. If x = 2.10 cm and y = 4.20 cm, what is the electric field at the dot?
Homework Equations
E = kq/r^2
The Attempt at a Solution
r = distance from A to point = sqrt(x^2+y^2)
Ea = kq/r^2...