- #1
Sipko
- 11
- 1
Homework Statement
What is E in Magnitude and Direction at the center of the square of (fig. 3-7). Assume that q = 10x10-8 C and a = 5 cm
Now I have am not well versed with vectors, I don't like them and they don't like me.
I can not figure out the directions the magnitudes move in.
Homework Equations
r=1/2(√2 a) = a/√2
E=k*q/r2
ETotal = E1 + E2 + E3 + E4
The Attempt at a Solution
So far I only managed to do this:
r= 5.0cm/√2 = 3.55*10-2
E-q=(8.99*109)*((-1.0*10-8 C)/(3.55*10-2 m)) = 7.13*104 N/C
E2q=(8.99*109)*(2*(-1.0*10-8 C)/(3.55*10-2 m)) = 1.43*105 N/C
And since the other magnitudes are the same I don't need to calculate the others.
So the next step involves knowing exactly which angles you need to calculate everything together. And that's what is giving me trouble.
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