Fundamentals Of Physics
Fundamentals Of Physics
11th Edition
ISBN: 9781119573968
Author: David Halliday
Publisher: WILEY
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Chapter 41, Problem 21P
To determine

To:

calculate the fraction f of conduction electrons for copper that have energies greater than the Fermi energy at

(a) T = 300K

(b) T = 1000K

And (c) Check the answer by numerical integration using Eqn 41.7 of the textbook.

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It is not possible to see very small objects, such as viruses, using an ordinary light microscope. An electron microscope can view such objects using an electron beam instead of a light beam. Electron microscopy has proved invaluable for investigations of viruses, cell membranes and subcellular structures, bacterial surfaces, visual receptors, chloroplasts, and the contractile properties of muscles. The "lenses" of an electron microscope consist of electric and magnetic fields that control the electron beam. As an example of the manipulation of an electron beam, consider an electron traveling away from the origin along the x axis in the xy plane with initial velocity ₁ = vi. As it passes through the region x = 0 to x=d, the electron experiences acceleration a = ai +a, where a and a, are constants. For the case v, = 1.67 x 107 m/s, ax = 8.51 x 1014 m/s², and a = 1.50 x 10¹5 m/s², determine the following at x = d = 0.0100 m. (a) the position of the electron y, = 2.60e1014 m (b) the…
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