28_InstSolManual_PDF_Part12

28_InstSolManual_PDF_Part12 - 28-12 Chapter 28 28.48 Set Up...

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28.48. Set Up: The minimum uncertainty product is Solve: 28.49. Set Up: The minimum uncertainty product is where is the radius of the Bohr orbit. In the Bohr orbit, and Solve: This is the same as the magnitude of the momentum of the electron in the Bohr orbit. Reflect: Since the momentum is the same order of magnitude as the uncertainty in the momentum, the uncertainty principle plays a large role in the structure of atoms. 28.50. Set Up: The kinetic energy K of the electron is related to the accelerating voltage V by For an electron and For a photon Solve: (a) For an electron and The electrons would have kinetic energy 0.0607 eV. (b) (c) so 28.51. Set Up: For a photon For an electron Solve: (a) photon electron (b) The electron has much less energy so would be less damaging. Reflect: For a particle with mass, such as an electron, For a massless photon 28.52. Set Up: For a photon For an electron Solve: (a) (b) The electron has much less energy than a photon of the same wavelength.
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