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Review Part A A hollow metal sphere has 5 cm and 9 cm inner and outer radii, respectively. The surface charge density on the inside surface is -150nC/m2. The surface charge density on the exterior surface is +150nC/m2 What is the strength of the electric field at point 4 cm from the center? Express your answer to three significant figures and include the appropriate units N/C Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remainingPart B What is the direction of the electric field at point 4 cm from the center? O Outward O Inward O The field is zero Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remainingPart C What is the strength of the electric field at point 8 cm from the center? Express your answer as an integer and include the appropriate units. 6627 N/C Submit revious Answers Request Answer X Incorrect; Try Again; 5 attempts remainingPart D What is the direction of the electric field at point 8 cm from the center? O Outward O Inward The field is zero Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remainingPart E What is the strength of the electric field at point 12 cm from the center? Express your answer to three significant figures and include the appropriate units. Value N/C Submit Request AnswerPart F What is the direction of the electric field at point 12 cm from the center? O Outward O Inward O The field is zero Submit Request Answer

This is the third time I have submitted this question, the other two answers were both incorrect. The electric field for A is not zero!

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