COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 26, Problem 98QAP
To determine
The speed of electron
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A light source of wavelength λ illuminates a metal and ejects photoelectrons with a maximum kinetic energyof 1.00 eV. A second light source with half the wavelength of the first ejects photoelectrons with a maximumkinetic energy of 4.00 eV.• Determine the work function of the metal
•61 SSM The function (x) displayed in Eq. 38-27 can describe a
free particle, for which the potential energy is U(x) = 0 in
Schrödinger's equation (Eq. 38-19). Assume now that U(x) = U, =
a constant in that equation. Show that Eq. 38-27 is a solution of
Schrödinger's equation, with
%3D
-V2m(E – U)
giving the angular wave number k of the particle.
k
k =
4-) Suppose we put a non-relativistic free particle inside a cube of side
V = L³
length L and volume
Er
a-) Each quantum state r of this particle has an energy
corresponding to the kinetic energy of the cube, depending on the
volume V. What happens to
Er
(V)?
b-) In terms of
and V, find the contribution of a particle in this state
der
Pr
to the gas pressure
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c-) Using this result, show that the average pressure P of any ideal gas
P = 2E
3 V for
composed of non-interacting particles will be given with
all, whether the gas conforms to classical, Fermi-Dirac, and Bose-Einstein
E
is the average kinetic energy of the gases.
statistics. Here
Chapter 26 Solutions
COLLEGE PHYSICS
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