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You want to produce three 2.00-mm diameter cylindrical wires, each with a resistance of 4.00 Ω...

You want to produce three 2.00-mm diameter cylindrical wires, each with a resistance of 4.00 Ω at room temperature. One wire is gold, one is copper, and one is aluminum.

What will be the length of the gold wire?

What will be the length of the copper wire?

What will be the length of the aluminum wire?

Gold has a density of 1.93 ×× 1044 kg/m3kg/m3. What will be the mass of the gold wire?

If gold is currently worth $$40 per gram, what is the cost of the gold wire?

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