The nucleus of an atom contains 29 protons and has a radius of 4.8 x 10-15 m. How much work (in electron volts
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The nucleus of an atom contains 29 protons and has a radius of 4.8 x 10-15 m. How much work (in electron volts

[From: ] [author: ] [Date: 12-04-09] [Hit: ]
so thats the amount of work done in coming from infinity to the surface.k is the Coulomb constant (Im sure its in your book), q1 and q2 are the charge of the nucleus and the proton, in Coulombs, r is the radius. Plug in the numbers.......
The nucleus of an atom contains 29 protons and has a radius of 4.8 x 10-15 m. How much work (in electron volts) is done by the electric force as a proton is brought from infinity, where it is at rest, to the "surface" of this nucleus?

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The potential energy at the surface is kq1*q2/r, so that's the amount of work done in coming from infinity to the surface.

k is the Coulomb constant (I'm sure it's in your book), q1 and q2 are the charge of the nucleus and the proton, in Coulombs, r is the radius. Plug in the numbers.
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