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Physics, 29.10.2019 10:31 speedyblackmann

An iron wire has length 8.0m and a diameter 0.50mm. the sir has a resistance r.

a second iron wire has length 2.0m and diameter 1.0mm

what is the resistance of the second wire?

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An iron wire has length 8.0m and a diameter 0.50mm. the sir has a resistance r.

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