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How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 30.0 cm in diameter to produce an electric

How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 30.0 cm in diameter to produce an electric field of 1000 N/C just outside the surface of the sphere? ? N = Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B electrons What is the electric field at a point 15.0 cm outside the surface of the sphere? E= Submit Previous Answers Request Answer ? N/C

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