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Problem
Problem
The potential energy function for a diatomic molecule is
U
(
x
)
=
a
x
12
−
b
x
6
U(x) = \frac{a}{x^{12}} - \frac{b}{x^6}
U
(
x
)
=
x
12
a
−
x
6
b
. In stable equilibrium, the distance between the particles is a.
(
2
a
b
)
1
/
6
\left(\frac{2a}{b}\right)^{1/6}
(
b
2
a
)
1/6
b.
(
a
b
)
1
/
6
\left(\frac{a}{b}\right)^{1/6}
(
b
a
)
1/6
c.
(
b
2
a
)
1
/
6
\left(\frac{b}{2a}\right)^{1/6}
(
2
a
b
)
1/6
d.
(
b
a
)
1
/
6
\left(\frac{b}{a}\right)^{1/6}
(
a
b
)
1/6
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