Ahydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=121.3nm. part a: what is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?
part b: what is the atom's final speed if it now emits an identical photon in a direction that is opposite to the direction of motion of the original photon?
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Ahydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=121.3nm. par...
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