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It said "and water tables composed of different chemicals" -- they will create a density that causes zinc and copper to float but not steel.
by city41 13y ago
It said "and water tables composed of different chemicals" -- they will create a density that causes zinc and copper to float but not steel.
- zAy0LfpBZLC8mAC 13y agoWhich is somewhat nonsensical, of course - they can already separate out the steel pennies magnetically, and it would be pretty pointless to have all of the remaining pennies after that separation step float. If anything, they'll have the less dense non-steel float and the denser non-steel sink.