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A copper wire 89.1 cm long and 1.05 mm in diameter have a mass of 6.07 g.
1. Discover the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.)
2. There is one free electron per atom in copper. Discover the number of free electrons in the wire.
The power P of an Electric circuit varies jointly with resistance , R and with the square of the current, I. find the power if the current is 2.00 A and the resistance is 2.00 ohms
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