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The allowed energies of a simple atom are 0.0 eV , 5.5 eV and 9.0 eV...

The allowed energies of a simple atom are 0.0 eV , 5.5 eV and 9.0 eV . An electron traveling at a speed of 1.9×106 m/s collisionally excites the atom.

What is the minimum speed the electron could have after the collision?

Express your answer with the appropriate units.

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Answer #1

2 41 x10

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