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In a scanning tunneling microscope, the effective height of the energy barrier is close to the...

In a scanning tunneling microscope, the effective height of the energy barrier is close to the work
function of the metal. If the work function is 4.67 eV, and the electron energy is 2.5 eV, then
what is the transmission coefficient
(a) across a distance of 0.50 nm?
(b) across a distance of 0.70 nm?

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