Forces and Potential Energy in Atoms  [ENDORSED]

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Forces and Potential Energy in Atoms

Postby Jose_Arambulo_2I » Fri Oct 21, 2016 1:34 am

I was wondering how exactly you'd do this problem

The electron in a hydorgen atom is initially at a distance 2.12 A from the proton, and then moves in the +x direction to a distance 0.529 A from the proton.
Calculate the magnitude of the force on the electron at each seperation
Calculate the change in the potential energy between the proton an and the electron
Calculate the change in the speed of the electron if the electron was initially stationary.

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Re: Forces and Potential Energy in Atoms  [ENDORSED]

Postby Chem_Mod » Mon Oct 24, 2016 12:58 pm

Please refer to problem numbers in addition to describing your difficulty in solving the problem.

You will need the equations for Coulombic force and Coulombic potential energy.

The difference in potential energy is the integral with respect to separation of the force, i.e., ΔU = -∫Fdr.

Finally, the velocity is the square root of 2 times the potential energy difference divided by the mass of the electron.

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