Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
27
Early Quantum Theory and Models of the Atom
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27-1: Discovery of the Electron
27-2: Blackbodies; Planck's Quantum Hypothesis
27-3 and 27-4: Photons and the Photoelectric Effect
27-5: Compton Effect
27-6: Pair Production
27-8: Wave Nature of Matter
27-9: Electron Microscope
27-11 and 27-12: Spectra and the Bohr Model

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 46
Q

A Ferrari with a mass of 1400 kg approaches a freeway underpass that is 12 m across. At what speed must the car be moving, in order for it to have a wavelength such that it might somehow “diffract” after passing through this “single slit”? How do these conditions compare to normal freeway speeds of 30 m/s?

A
3.9×1038 m/s3.9 \times 10^{-38} \textrm{ m/s}, no diffraction pattern
Giancoli 7th Edition, Chapter 27, Problem 46 solution video poster
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