The force between two atoms in a diatomic molecule can be represented approaximately by the potential energy function
`U = U_(0) [((a)/(x))^(12) - 2 ((a)/(x))^(6) ]`
where `U_(0)` and a are constant (a) At what value of x is the potential energy zero ?
(b) Fidn teh force `F_(x)`. (c) At what value of X is the potential energy a minmum ?

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