Magnitude and Direction of Charge
Four point charges are at the corners of a square of side a as shown in the attached figure. (A=5, B=4, C=4)
a.) Determine the magnitude and direction of the electric field at the location of charge q (use k_e for the Coulomb constant and q and a as necessary)
b.) What is the resultant force on q?
in this problem, i found each of the vectors first. Through the work I did, I came to an answer of (6.77 z + 5.77 j) k_eq/a^2. from there, I found the square root of [(6.77)^2 + (5.77)^2] k_eq/a^2, yielding 8.895 k_eq/a^2.
the above answer ended up being wrong, but the angle that i got from it (using the arctangent of 6.77 and 5.77 ) was correct (40.44 degrees)
help! what is the correct magnitude and where did i go wrong?
