A hydrogen atom initially at rest emits an ultraviolet
A hydrogen atom, initially at rest, emits an ultraviolet photon with a wavelength of \lambda = 122nm. What is the recoil speed of the atom after emitting the photon?
v = _____ m/s
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a hydrogen atom initially at rest emits an ultraviolet photon with a wavelength of lambda 122nm what is the recoil
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