Homework Help: physics honors

Posted by thomas on Thursday, May 31, 2012 at 7:24pm.

Suppose that pure gold was to be made into a very long, thin wire for high-end stereo systems. (Gold is often used because it does not oxidize so it makes very good electrical contacts). If the gold wire was to have a radius of 0.01 cm, how long of a wire could you make from 111 g. of gold?

physics honors - drwls, Friday, June 1, 2012 at 2:15am
Convert 111 g to the volume of gold by dividing by the density. Then use
Wire length = Volume/(pi*r^2)

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