I can't figure out how to get started on this problem. Maybe you guys can help. A spherical ballon carries a total cahrge Q(1C) uniformly distributed over the surface. At t=0, r=r(sub 0), at t=30s, r=2r(sub 0). Find what is the electron field at 90 s at a distance of .5m from the ballon surface. I have to use Gaussean for this problem. I know that you have to get an expression for E(t), the electric field as a function of time. Can you guys help?(adsbygoogle = window.adsbygoogle || []).push({});

thanks

nertil

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# Homework Help: Gauss problem

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