# physics

calculate the free electrons of a copper wire having a 0.064 inches diameter and 1000 ft. long?

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1. Copper has one free conducting electron per atom, in the metallic state. The other 28 electrons remain bound.

For the number of atoms, compute the mass of the wire and divide it by the mass of one copper atom. You will need to look up the density of copper.

The mass of one copper atom is
(63.5 g/mole)/(6.02*10^23 atoms/mole)

Show your work for further assistance, if needed.

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