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Re: [Phys-L] composition of US coins

I believe the other 10% is copper

On Thu, Dec 1, 2016 at 1:14 PM, William Wehrbein <wmw@nebrwesleyan.edu>
wrote:

We use some "old" dimes and quarters for neutron activation experiment. I
understand that they are 90% silver. What is the remaining 10%?
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--
Todd K. Pedlar
Associate Professor of Physics
Luther College, Decorah, IA
pedlto01@luther.edu