A stationary hydrogen atom, which is in the ground energy state, collides with the same hydrogen atom moving with speed v. Using the Bohr model and knowing that the ionization energy of a hydrogen atom is Ei, and the mass of the atom is m, determine the limiting speed v0 below which atomic collisions are elastic. After reaching velocity v0, collisions between atoms can become inelastic, causing radiation. Determine the percentage of the difference between the frequencies of radiation observed in the direction coinciding with the direction of the initial velocity of the incident atom, and in the opposite direction, to the arithmetic mean of these frequencies. It is known that Eu = 13.6 eV = 2.18•1018 J; m=1.67•10-27 kg.
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