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Physics: Principles and ProblemsChapter 27:
Quantum TheoryProblem of the Week![](/sites/dl/free/0098458137/193800/ch27_title.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/POWsolutions.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/POWproblem1.gif) (0.0K) | To
calculate the wavelength of a sodium atom, use the diffraction
grating equation: | | ![](/sites/dl/free/0098458137/193800/ch27_calc01.gif) (1.0K) | | ![](/sites/dl/free/0098458137/193800/POWproblem2.gif) (0.0K) | To
estimate the time the sodium atom spends in the apparatus, use
two feet as a distance and determine the velocity using the
de Broglie equation. | | ![](/sites/dl/free/0098458137/193800/ch27_calc02.gif) (1.0K) | | ![](/sites/dl/free/0098458137/193800/POWproblem3.gif) (0.0K) | For
you, use a mass of, say, 50 kg. | | ![](/sites/dl/free/0098458137/193800/ch27_calc03.gif) (1.0K) | | which
is about 600 000 times the age of the universe. | | ![](/sites/dl/free/0098458137/193800/gutter.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/gutter.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/gutter.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/gutter.gif) (0.0K) | ![](/sites/dl/free/0098458137/193800/gutter.gif) (0.0K) |
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