In free space, a solid metal sphere ofradius 3 cm, centered at the origin, supports a surface chargedensity of 4.421 mC/m2. Surrounding it is a concentric hollow metalsphere of radius 5 cm with a surface charge density of -1.273mC/m2. Determine the electric flux density D everywhere. Then, findthe electric energy density wE between the spheres.

I think whats thowing me off here is that the sphere has a surfacecharge density... It seems to me it should have a volume chargedesnity. I've tried working it a few times, but am so stumped Idoubt my work will be helpful. Help would be very much appreciated.Also need to use Gauss's law to solve this problem.

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