EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Question
Chapter 38, Problem 16Q
To determine
The explanation for an increase in separation between energy states with an increase in
Expert Solution & Answer
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Students have asked these similar questions
a) If the electron is in the ground state argue that the expectation value of the electric dipole
(P.) =(qf) must vanish. Do not need to do a calculation.
b) Show that for some of the n=2 states the expectation value (p,)=(qî) does not vanish. Give
one example and proceed to calculate that expectation value.
3. Consider a particle of mass m in the potential
V = = Vo[8(x − a) — 8(x+a)].
Show that there is always a bound state for all nonvanishing a.
Problem 2 (
) A microscopic spring-mass
system has a mass m = 5 x 10-26 kg and the
energy gap between the 2nd and 3rd excited states
is 7 eV.
>) Calculate in joules, the energy gap
the 1st and 2nd excited states: E=
bet
b) (=
What is the energy gap between the
4th and 7th excited states: E=
ev
c) (- -) To find the energy of the ground state,
Wluation can be used ? (check the
formula_sheet and select the number of the
equation)
d) (t) Which of the following substitutions
can be used to calculate the energy of the ground
state?
01/27
02 x 7
-) The energy of the ground state is: E=
eV
f) To find the stiffness of the spring,
which equation can be used ? (check the
formula_sheet and select the number of the
equation)
Which of the following substitutions
can be used to calculate the stiffness of the
spring?
6.582x10-16
5x10-26
O(5 x 10-26)
7
6.582x10-16
O(5 x 10-26) (6.582x10-16
7
6.582x30-16
5x10-26
O(5 x 10-26) (7)²
O(5 x 10-26) (6.582 x 10-16) ²
02-
7
(6.582x10-16) 2
h). ) The stiffness…
Chapter 38 Solutions
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