Potential Energy The potential energy E (the energy stored

Chapter 3, Problem 3.1.1.399

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Potential Energy The potential energy E (the energy stored for use at a later time) between two ions in a certain molecular structure is modeled by the function

        \(E=-\frac{5.6}{r}+10 e^{-r / 3}\)

where r is the distance separating the nuclei.

(a) Writing to Learn Graph this function in the window [-10,10] by [-10,30], and explain which portion of the graph does not represent this potential energy situation.

(b) Identify a viewing window that shows that portion of the graph (with \(r \leq 10\)) which represents this situation, and find the maximum value for E.

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