EBK PHYSICS FOR SCIENTISTS AND ENGINEER
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
6th Edition
ISBN: 9781319321710
Author: Mosca
Publisher: VST
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Chapter 38, Problem 63P
To determine

The probability that a conduction electron in the silver having kinetic energy of 4.9eV .

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The mean speed of conduction electron in Cu is electrons1.5 × 106 ms-1 and the frequency of vibration of the copper atoms at room temperature is about 4 × 1012 s-1. Estimate the drift mobility of electrons and the conductivity of Cu. The density of Cu is 8.96 g cm-3 and the atomic mass is 63.56 g mol-1.
At a certain temperature, the electron and hole mobilities in intrinsic germanium are given as 0.43 and 0.21 m2/V s, respectively. If the electron and hole concentrations are both 2.3 x 10'® m, find the conductivity at this temperature.
Since the Fermi energy level of zinc is EF = 9.47 eV, what is the number of electrons per unit energy per unit volume at this energy level? Since the resistivity of zinc is 5.90 x 10^-8 ohm.m, calculate the average time interval between collisions of electrons.
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