The energy levels are given by:
\[ E_n = \frac{n^2 h^2}{8mL^2} \]
where \( n \) is the principal quantum number, \( h \) is Planck's constant (\(6.626 \times 10^{-34} \, \text{J s}\)), \( m \) is the mass of the particle, and \( L \) is the length of the box.
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