Seraph404
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Homework Statement
Two very large, nonconducting plastic sheets, each 10.0 cm thick, carry uniform charge densities [tex]\sigma[/tex]1, [tex]\sigma[/tex]2, [tex]\sigma[/tex]3, & [tex]\sigma[/tex]4 on their surfaces, as shown in the figure .
These surface charge densities have the values [tex]\sigma[/tex]1= -6.00E-6 C/m^2, [tex]\sigma[/tex]2= +5.00E-6 C/m^2,[tex]\sigma[/tex]3= +2.00E-6 C/m^2, and [tex]\sigma[/tex]4= +4.00E-6 C/m^2.
A) Use Gauss's law to find the magnitude of the electric field at the point A, 5.00 cm from the left face of the left-hand sheet.
Homework Equations
Gauss's Law
The Attempt at a Solution
Well, at first this confused me because I'm pretty sure I remember that in Gauss's law, electric field depends only on the enclosed charge. But this problem gives me a lot of distances. So I guess the formula
E = [tex]\sigma[/tex]/(2*[tex]\epsilon[/tex]0 )
doesn't work. That's what I tried, anyway, and got the wrong answer. So, how do I approach a problem like this?