(a) Twelve equal charges, q, are situated at the corners of a regular 12-sided poly- gon (for instance, one on each numeral of a clock face). What is the net force on a test charge Q at the center? (b) Suppose one of the 12 q's is removed (the one at "6 o'clock"). What is the force on Q? Explain your reasoning carefully.
(a) Twelve equal charges, q, are situated at the corners of a regular 12-sided poly- gon (for instance, one on each numeral of a clock face). What is the net force on a test charge Q at the center? (b) Suppose one of the 12 q's is removed (the one at "6 o'clock"). What is the force on Q? Explain your reasoning carefully.
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Transcribed Image Text:(a) Twelve equal charges, q, are situated at the corners of a regular 12-sided poly-
gon (for instance, one on each numeral of a clock face). What is the net force
on a test charge Q at the center?
(b) Suppose one of the 12 q's is removed (the one at "6 o'clock"). What is the force
on Q? Explain your reasoning carefully.
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