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A solid metal ball of radius 1.6 cm is located near a hollow plastic ball of...

A solid metal ball of radius 1.6 cm is located near a hollow plastic ball of radius 2.1 cm bearing a uniformly distributed charge of -9 nC on its outer surface. The distance between the centers of the balls is 8 cm.


What is the electric field at the center of the metal ball due just to the charges on its surface? Assume the +x axis is the right, the +y axis is up and the +z axis is out.

< ____ , _____ , ______ > N/C

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