p41_039

# p41_039 - 39. The initial kinetic energy of the electron is...

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Unformatted text preview: 39. The initial kinetic energy of the electron is 50.0 keV. After the ﬁrst collision, the kinetic energy is 25 keV; after the second, it is 12.5 keV; and after the third, it is zero. The energy of the photon produced in the ﬁrst collision is 50.0 keV − 25.0 keV = 25.0 keV. The wavelength associated with this photon is λ= 1240 eV · nm = 4.96 × 10−2 nm = 49.6 pm 25.0 × 103 eV where the result of Exercise 3 of Chapter 39 is used. The energies of the photons produced in the second and third collisions are each 12.5 keV and their wavelengths are λ= 1240 eV · nm = 9.92 × 10−2 nm = 99.2 pm . 12.5 × 103 eV ...
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## This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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