Introduction To Quantum Mechanics
3rd Edition
ISBN: 9781107189638
Author: Griffiths, David J., Schroeter, Darrell F.
Publisher: Cambridge University Press
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Chapter 9.3, Problem 9.10P
To determine
Show that the downward-sloping turning point as
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II. PROBLEM 2. LIÉNARD-WIECHERT POTENTIALS.
Problem 10.15A particle of charge q moves in a circle of radius a at constant
angular velocity w. (Assume that the circle lies in the xy plane, centered at the
origin, and at time t = 0 the charge is at (a, 0), on the positive x axis.) Find the
Liénard-Wiechert potentials for points on the z axis.
It would be useful to parameterize the circle as
r(t) = a (cos (wt) + sin (wt)ÿ),
(1)
2
and then directly substitute the values into the Eqs. (10.46) and (10.47), i. e.
V (r, t) =
A(r,t) =V(r,t),
(2)
4TE0 2c - 4 v
where
|r – w (t,)|
2 =r - w (t,), t, =t -
=t -
(3)
and the velocity of the particle is also taken at the retarded time.
11.1.3 Show that the electrostatic potential produced by a charge q at z = a
for r < a is
y(r) =
9
Απέρα n=0
(7) Pn(cos 0).
This is the solution to problem 7.36 . Could you explain the yellow marked place ? How we got <0|y|1> and <x^2>0 ?
Chapter 9 Solutions
Introduction To Quantum Mechanics
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