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OpenStudy (anonymous):
a point charge ( Q= -10x10^-6 c) is at a centre of a metallic sphere that has a redius of 20 cm . the electric field .5 m away from the center of the sphere is found to be -432 N/c . what is the charge density on the metallic sphere ????
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OpenStudy (anonymous):
i know its physics but no one answers me in physics group can any one help me
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