(Solved): The figure shows a spherical shell with uniform volume charge density =2.12nC/m3, inner radius a ...

The figure shows a spherical shell with uniform volume charge density $$?=2.12\mathrm{nC}/{\mathrm{m}}^3$$, inner radius $$a=10.0\mathrm{cm}$$, and outer radius $$b=$$ 2.2a. What is the magnitude of the electric field at radial distances (a) $$r=0$$; (b) $$r=a/2.00$$, (c) $$r=a$$, (d) $$r=1.50a$$, (e) $$r=b$$, and (f) $$r=3.00b$$ ? (a) Number Units (b) Number Units (c) Number Units (d) Number Units (e) Number Units (f) Number Units