27.The potential energy function for either one of the two atoms in a diatomic molecule is often approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What is the force on an atom at this separation? (c) How does the force vary with the separation distance? Solution a. -2a b 1/6 ; b. 0; c. ~x6

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Chapter1: Units, Trigonometry. And Vectors
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27.The potential energy function for either one of the two atoms in a diatomic molecule is often
approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what
distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What
is the force on an atom at this separation? (c) How does the force vary with the separation
distance?
Solution
a.
-2a
b
1/6
; b. 0; c. ~x6
Transcribed Image Text:27.The potential energy function for either one of the two atoms in a diatomic molecule is often approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What is the force on an atom at this separation? (c) How does the force vary with the separation distance? Solution a. -2a b 1/6 ; b. 0; c. ~x6
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