Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Question
Chapter 10, Problem 14P
(a)
To determine
The average energy of a
(b)
To determine
The temperature at which average energy of an ideal gas equals the energy obtained in part (a).
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The Fermi energy of sodium is 3.23 eV.
(a) Find the average energy Eav of the electrons at absolute zero.
(b) What is the speed of an electron that has energy Eav ?
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Starting with the Fermi energy given in Table , estimate the number of conduction electrons per atom for aluminum, which has density 2.70 x 103 kg/m3 at T = 300 K
Chapter 10 Solutions
Modern Physics
Ch. 10 - Prob. 1QCh. 10 - Prob. 2QCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 8PCh. 10 - The light from a heated atomic gas is shifted in...
Ch. 10 - Prob. 10PCh. 10 - To obtain a more clearly defined picture of the...Ch. 10 - Prob. 12PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 26P
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- Calculate the copper's mean free path. Let's say copper has a Fermi energy of 6.65 eV. 9.21 x1028 m-3 of electrons are present per unit volume. In copper, an electron has an effective mass of 1.51 times its rest mass. Copper has 5.9x107 S/m in conductivity.arrow_forwardTime left In a phosphorous-doped (n-type) silicon, the Fermi level is shifted upward 0.1 eV. What is the probability of an electron's being thermally promoted to the conduction band in silicon (Eg = 1.107 eV at 25 deg C? Your answer must be to 2 significant figures or will be marked wrong. Nearrow_forwardMetallic lithium has a bcc crystal structure. Each unit cell is a cube of side length a = 0.35 nm. (a) For a bcc lattice, what is the number of atoms per unit volume? Give your answer in terms of a. (Hint: How many atoms are there per unit cell?) (b) Use the result of part (a) to calculate the zero-temperature Fermi energy EF0 for metallic lithium. Assume there is one free electron per atom.arrow_forward
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