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The current of a beam of electrons, each with a speed of 1.150×103 m/s, is 9.059...

The current of a beam of electrons, each with a speed of 1.150×103 m/s, is 9.059 mA. At one point along its path, the beam encounters a potential barrier of height -4.719 μV and thickness 248.3 nm. What is the transmitted current?

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