Answer
$b\lt a\lt d \lt e\lt c$
Work Step by Step
From figure 6.2:
$b\lt a\lt d \lt e\lt c$
Frequencies (1/s):
a) $10^{10}$
b) $10^{8}$
c) $10^{22}$
d) $10^{15}$
e) $10^{16}$
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