PSC 1121 Lecture 18: 11:03:16 Lecture

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3 Nov 2016

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Ellipse

  





E.g. the Water Molecule

1. Water has a polarized structure

• More positive on hydrogen end

• More negative on oxygen end

2. The angle that the hydrogens make with the oxygen atom is very specific, 104.4776°

3. The distances from hydrogen to oxygen are 0.0958 nm

• 9.58 x 

If a electro or proto is  ties farther away…

1. The Coulomb interaction depends upon the square of the distance, , between the

interacting pair you are studying

2. Therefore, if you have only electrons and protons, and your 2nd neighbor is double the

distance, interaction force 1/4th of nearest neighbor force (NNF)

3. If it is triple the distance to reach the third neighbor, the interaction force is 1/9th of NNF

4. In general, if the nth neighbor is n times as far from target particle, the interaction force

is exactly 1/nth of NNF

In general





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