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Electrons with a speed of 2.1 × 106 m/s are directed towards a 1.0-μm wide slit.An electron detector is placed 1.0 m behind the slit.How wide is the central maximum of the electron diffraction pattern on the detector? (h = 6.626 × 10-34 J ∙ s,melectron = 9.11 × 10-31 kg)
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