Is the Electric Field Inside a Hollow Dielectric Sphere Zero?

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Homework Statement


I am asked to find if there exists an electric field of a hollow dielectric field at a sphere is 0 and proof it.

Homework Equations


The Attempt at a Solution


I've drawn this picture:

http://img19.imageshack.us/img19/2295/hollowp.th.jpg

[tex]\omega \rightarrow 0[/tex]
[tex]\delta q \rightarrow dq \rightarrow 0[/tex]

[tex]E1 = k \frac{dq1}{r1^2}[/tex]
[tex]E2 = k \frac{dq2}{r2^2}[/tex]

if [tex]\vec{E_1} + \vec{E_2} = \vec{0}[/tex] for p
[tex]\vec{E_net} = \vec{0}[/tex]for all p
[tex]k \frac{dq_1}{r_1^2} = \frac{k\sigma\dA_1}{r_1^2}[/tex]
[tex]k \frac{dq_2}{r_1^2} = \frac{k\sigma\dA_2}{r_2^2}[/tex]

Explanation of the picture:
1. The two dotted circles are gaussian sphere each with radius r1 and r2.
2. The solid circle is the hollow dielectric sphere viewed from one side
3. P is just a point inside the dielectric sphere

So far this is all I got, can someone please guide me what to do next in this proof..
 
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