What are the magnitude and direction (in degrees counterclockwise from the horizontal) of the electric field at the center of the square of Fig. 23-31 if q = 0.9*10^-8 C and a = 5.1 cm?
The Attempt at a Solution
Calculated r using the pythagorean theorem:
sqrt(.051^2+.051^2)=.07212m ...this is the length of the entire diagonal so r would be the diagonal divided by 2 which equals .036062445841 meters.
Starting with E1 (the upper left hand corner of the square) and moving clockwise to E4...
Here is where I get confused...do I resolve these in horizontal and vertical components? And, how do I find the angle? Thanks for your help!
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