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A certain laboratory experiment requires an aluminum wire of length of 40.0 m and a resistance...

A certain laboratory experiment requires an aluminum wire of length of 40.0 m and a resistance

of 4.10 Ω at 20.0°C. What diameter wire must be used? (The resistivity of aluminum

at 20.0°C is 2.82 ✕ 10−8 Ω · m.)

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