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A thin ball shell is shaped like a hollow ball with a radius of 42.8 cm....

A thin ball shell is shaped like a hollow ball with a radius of 42.8 cm. The material is a conductor with charge 0.8 nC A point charge of -5.4 nC is placed in the center of the ball. How many N / C is the electric field just outside the ball? Remember positive is outwards I did this: got Total charge Qencloced = -4.6*10^-9 C Found the field E=(Qencloced/Epsilon) divided by 4*pi*speed squared Got 225.80 N/C. The answer in my (really annoying online test) is 265 N/C

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