After learning about de Broglies hypothesis that particles
Chapter 27, Problem 27.38(choose chapter or problem)
After learning about de Broglies hypothesis that particles of momentum p have wave characteristics with wavelength h/p, an 80.0-kg student has grown concerned about being diffracted when passing through a 75.0-cm-wide doorway. Assume that significant diffraction occurs when the width of the diffraction aperture is less than 10.0 times the wavelength of the wave being diffracted. (a) Determine the maximum speed at which the student can pass through the doorway in order to be signicantly diffracted. (b) With that speed, how long will it take the student to pass through the doorway if it is 15.0 cm thick? Compare your result with the currently accepted age of the Universe, which is 4.00 1017 s. (c) Should this student worry about being diffracted?
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