Gauss law 2 nonconducting infinite planes and 1 conducting infinite plane in the middle?

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jeir35

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In the picture below, three very large sheets are separated by equal distances of 19 cm. The first and third sheets are very thin and nonconducting and have surface charge densities of 2 mC/m2 and -2 mC/m2 respectively. The middle sheet is conducting but has no net charge.


(a)What is the electric field E0 inside the middle sheet?
0

(b)What is the charge density s on the surface of the middle sheet facing the left sheet?
-2

(c)What is the charge density s on the surface of the middle sheet facing the right sheet?
2

(d)What is the magnitude of the electric field E1 between the left and middle sheets?

this is where i am stuck, i know E= surface density/ 2eo

im just confused my answers arent working

i thought it would be 2( .002 C/N / 2 * 8.85e-12) but that doesnt work.
 
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