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patapat
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Homework Statement
A hydrogen atom at rest in the laboratory emits the Lyman radiation.
(a) Compute the recoil kinetic energy of the atom.
(b) What fraction of the excitation energy of the n = 2 state is carried by the recoiling atom? (Hint: Use conservation of momentum.)
Homework Equations
E=-13.6/n[tex]^{2}[/tex]ev
The Attempt at a Solution
I'm not sure if this equation is relevant, but I'm not sure what they are referring to when they say recoil kinetic energy of the atom.