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Find the de Broglie wavelength ? for an electron moving at a speed of 1.00×106m/s. (Note that this speed is low enough that the classical momentum formula p=mv is still valid.) Recall that the mass of an electron is me=9.11×10?31kg, and Planck's constant is h=6.626×10?34J?s. Find the de Broglie wavelength of a baseball pitched at a speed of 40.5m/s. Assume that the mass of the baseball is 0.143kg.

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