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22. First we rewrite Eq. 1922 using Eq. 194 and Eq. 197:
()
A
rms
A
3
33
.
kN
T
R
Tk
T
v
M
mN
M
==
=
The mass of the electron is given in the problem, and
k
= 1.38
×
10
–23
J/K is given in the
textbook. With
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 Spring '08
 Any
 Physics, Mass

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