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Author Question: Bohr's atomic theory predicted energy levels for hydrogen of En = (2 2 k2 e4m)/(hn)2. If instead we ... (Read 79 times)

future617RT

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on: Jul 27, 2018
Bohr's atomic theory predicted energy levels for hydrogen of En = (2 2 k2 e4m)/(hn)2. If instead we place 1 electron in orbit about a bare nucleus of atomic number Z, how do you expect Z to be incorporated into the En formula and why?
 
  What will be an ideal response?

Question 2

Consider a motorcycle of mass 150. kg, one wheel of which has a mass of 10. kg and a radius of 30. cm.
 
  What is the ratio of the rotational kinetic energy of the wheels to the total translational kinetic energy of the bike? Assume the wheels are uniform disks.


Edwyer

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Reply #1 on: Jul 27, 2018
Answer to Question 1

The attractive force is k(Ze)e/r2 instead of e2/r2. So replace e2 by Ze2 in the Bohr predictions: En = -(2 2 k2 Z2 e4m)/(hn)2

Answer to Question 2

0.13 : 1


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future617RT

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Reply #2 on: Jul 27, 2018
TY


Edwyer

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Reply #3 on: Jul 27, 2018
You're welcome


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