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mikael mikael
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11 years ago
The spacing of the surface planes of a crystal is  190 pm. A beam directed normally at the surface of the crystal undergoes first order diffraction at an angle of  27° from the normal. The diffraction is done with a beam of monoenergetic neutrons. The energy of the neutrons is closest to: 
A) 0.11 eV 
B) 0.096 eV 
C) 0.12 eV 
D) 0.14 eV 
E) 0.15 eV 
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padrepadre
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11 years ago
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mikael Author
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10 years ago
Thanks for the homework assistance, my physics class is a big challenge.
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