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Electron Energy Levels Practice Test
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Q1
An electron collides with an atom, exciting an electron in the atom from it's ground state $\left( 0eV\right)$. The initial velocity of the incoming electron is 
and after the collision it has a velocity of 
. What is the energy of the excited electron in the atom after the collision in electron-volts?
An electron collides with an atom, exciting an electron in the atom from it's ground state $\left( 0eV\right)$. The initial velocity of the incoming electron is
