Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University
9th Edition
ISBN: 9781305372337
Author: Raymond A. Serway | John W. Jewett
Publisher: Cengage Learning
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Chapter 43, Problem 38P

(a)

To determine

The ratio of number of allowed energy levels at 8.50eV to the number at 7.05eV.

(b)

To determine

The ratio of the number of occupied levels in copper at an energy of 8.50V to the number at the Fermi energy.

(c)

To determine

The comparison for the answer obtained in part(b) with that obtained in part(a).

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The Fermi energy of copper at 300 K is 7.05 eV. (a) What is the average energy of a conduction electron in copper at 300 K? (b) At what temperature would the average translational energy of a molecule in an ideal gas be equal to the energy calculated in part (a)?
(a) Show that the ideal gas law can be written as( PV =2NE-/ 3) where N is the number of particles in the sampleand E- is the mean energy. (b) Use the result of (a) to estimate the pressure of the conduction electrons in copper, assuming an ideal Fermi electron gas. Comment on the numerical result, noting that 1 atm = 1.01 x 105 Pa.
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Chapter 43 Solutions

Physics For Scientists And Engineers With Modern Physics, 9th Edition, The Ohio State University

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