Chapter 35: Problem 8
What did Einstein mean by his remark, loosely paraphrased, that "God does not play dice"?
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Chapter 35: Problem 8
What did Einstein mean by his remark, loosely paraphrased, that "God does not play dice"?
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The wave functions of Problem \(58,\) as well as their derivatives, need to be continuous at \(x=L\) if these functions are to represent the quantum state of a particle in the finite square well. (a) Show that these conditions lead to two equations: $$ \begin{array}{c} A \sin (\sqrt{\epsilon})=B e^{-\sqrt{\mu-\epsilon}} \\ \sqrt{\epsilon} A \cos (\sqrt{\epsilon})=-\sqrt{\mu-\epsilon} B e^{-\sqrt{\mu-\epsilon}} \end{array} $$ (b) then show that these lead to the single equation $$ \tan (\sqrt{\epsilon})=-\sqrt{\frac{\epsilon}{\mu-\epsilon}} $$
The table below lists the wavelengths emitted as electrons in identical square-well potentials drop from various states \(n\) to the ground state. Determine a quantity that, when you plot \(\lambda\) against it, should yield a straight line. Make your plot, establish a best-fit line, and use your line to determine the width of the square well. $$\begin{array}{|l|c|c|c|c|c|} \hline \text { Initial state, } n & 4 & 5 & 7 & 8 & 10 \\ \hline \text { Wavelength, } \lambda(\mathrm{nm}) & 1110 & 674 & 354 & 281 & 169 \\ \hline \end{array}$$
An alpha particle (mass 4 u) is trapped in a uranium nucleus with diameter 15 fm. Treating the system as a one-dimensional square well, what would be the minimum energy for the alpha particle?
A particle is confined to a 1.0 -nm-wide infinite square well. If the energy difference between the ground state and the first excited state is \(1.13 \mathrm{eV},\) is the particle an electron or a proton?
An electron is in a narrow molecule \(4.4 \mathrm{nm}\) long, a situation that approximates a one-dimensional infinite square well. If the electron is in its ground state, what is the maximum wavelength of electromagnetic radiation that can cause a transition to an excited state?
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