Fundamentals of Physics Extended
Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 39, Problem 14P
To determine

To find:

Change in the electrons energy.

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An electron is in a certain energy state in a one-dimensional,infinite potential well from x=0 to x=L=200 pm. The electron’s probability density is zero at x=0.300L, and x=0.400L;it is not zero at intermediate values of x. The electron then jumpsto the next lower energy level by emitting light.What is the changein the electron’s energy?
An electron in a one-dimensional infinite potential well of length L has ground-state energy E1.The length is changed to L' so that the new ground-state energy is E'1 = 0.500E1 .What is the ratio L'/L?
A physicist makes many measurements of the frequency of light emitted when a electron transitions from a particular excited state of an ion. For the system she is studying, the only allowed transition from the excited state is to the ground state. Her measurements have an average value of favg=2.13×1015 Hz with a standard deviation of ?f=17.4×106 Hz. What is the minimum lifetime Δtmin of the excited state in seconds?

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