a. What is the strength of the electric field at the position indicated by the dot in the figure? Use the following values: q1 = 1.09 nC, q2=0.93 nC, d1=2.49 cm, d2=6.9 cm, d3 = 4.27 cm.
b. What is the direction of the electric field at the position indicated by the dot in the figure? Specify the direction as an angle with respect to the horizontal.
E = (k*q)/r2
k = 9*109 N*m2/C2
The Attempt at a Solution
I've tried to simply sum the electric fields, using the distance of the two hypotenuses calculated with the Pythagorean theorem:
(k*(1.09*10-9 C))/(.0494297 m)2 + (k*(0.93*10-9)/(.0811436 m)2
= 4.015*103 C
I also tried calculating the x and y components separately, then summing the vectors, but it took an entire page and the answer was wrong. I tried doing it two other ways, but I don't even know what I did. I'm so lost. SOS