Is this copper wire? (Photos attached to post)

Originally Posted by FLScrapperGuy1

Okay, check this out: I filled a graduated cylinder with 110 mL of room temperature tap water. I added enough of the wire, pulled from the top right motor in my uppermost photo, to the water in the graduated cylinder until it had risen 10 mL. I dried the wire, and found the wire's mass. The mass was 67.11 grams (used a Scout Pro digital scale suitable up to 400 grams). Using the formula for density D=M/V, this means the density of this unknown wire is 6.71 g/mL... Copper's density is 8.96, so this cant be copper. Aluminum's density is 2.70g/mL. Neither one of these is close to what I measured from the unknown wire .. so what really IS this wire made up of? Zinc has a density of 7.13g/mL, so according to my measures this wire could be zinc. Or an alloy of some sort?

Okay, I know this is too technical, but now that I know this wire is not aluminum and it's not copper, it's got me hooked.

I will give you an "A" for effort, but how did you subtract the weight and volume of the varnish and air trapped in the coil windings? Is it possible that could have resulted in a lower density value that would have been computed from a solid block of copper?