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An electron with kinetic energy 2.80 eV encounters a potential barrier of height 4.70 eV.If the barrier width is 0.40 nm,what is the probability that the electron will tunnel through the barrier? (1 eV = 1.60 × 10-19 J,mel = 9.11 × 10-31 kg,h = 1.055 × 10-34 J ∙ s, h = 6.626 × 10-34 J ∙ s)
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