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1. (a) At absolute temperature
T
= 0, the probability is zero that any state with energy
above the Fermi energy is occupied.
(b) The probability that a state with energy
E
is occupied at temperature
T
is given by
PE
e
EE k
T
F
()
/
=
+
−
1
1
where
k
is the Boltzmann constant and
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 Spring '08
 Any
 Physics, Energy

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