An electron, tial well may be anywhere within the interval 2a. So the uncertainty in its position is Δx= 2a. There must be a corresponding uncertainty in the momentum of the electron and hence it must have a certain kinetic energy. Calculate this energy from the uncertainty relationship and compare it.

      K

Explanation:

The Heisenberg uncertainty principle is

          Δx Δp ≥ h' / 2

          h’ =

The kinetic energy of a particle is

          K = ½ m v²

           p = mv

           v =

substitute

           K =

from the uncertainty principle,

           Δp =

we substitute

          K =

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