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From: rab@well.UUCP (Bob Bickford)
Newsgroups: net.physics
Subject: Re: electrons
Message-ID: <557@well.UUCP>
Date: Sun, 26-Jan-86 20:26:47 EST
Article-I.D.: well.557
Posted: Sun Jan 26 20:26:47 1986
Date-Received: Tue, 28-Jan-86 05:40:22 EST
References: <1165@homxb.UUCP>
Organization: Whole Earth Lectronic Link, Sausalito, CA
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In article <1165@homxb.UUCP>, dkw@homxb.UUCP (D.WOMBOUGH) writes:
> Can anyone help me with the following problem.
> I am not really into physics so I can't figure this out
> I need to know how to calculate the number electrons in
> a solid copper sphere 10cm in diameter. 
> 
> 		Thanks
> 			Dennis Wombough


	Understand this is just off the top of my head.....


	First, look up the density of copper, and use that to calculate
the mass of the sphere in question.

	Next, look up the mass of a typical copper atom, divide that into
the above result to give number of atoms in the sphere in question.

	Last, multiply by the atomic number of copper, to give the number
of protons in the sphere in question.  Assuming no net charge, this
will also be the number of electrons in the sphere.

       Robert Bickford     (rab@well.uucp)
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|  I doubt if these are even my own opinions.  |
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