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Unformatted text preview: E photon = Î” E = 13.6eV( (1/3)^2 â€“ (1/7)^2) = 1.23eV and Î» = hc/ E photon = 1240 eV nm/1.23 eV = 1008 nm ~ 1010nm (not sure whatâ€™s up with the rounding in the answer key) b) The momentum of photon is p = h/ Î» momenum is conserved, so momenum of atom is p = m v where m=1.67e27 kg (proton mass) We have v = h/(m Î» ) = (6.626e34 J s)/((1.67e27kg)*(1.01e6m)) = 3.95e1 m/s...
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This note was uploaded on 09/08/2008 for the course PHYS 3B taught by Professor Wu during the Spring '08 term at UC Irvine.
 Spring '08
 Wu
 Energy, Work, Photon

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