Essay
Calculate the de Broglie wavelength of an electron (9.11* 10-31 kg) moving at 99% of the speed of light.This is closest in size to which of the following (approximate dimensions are given): a proton (2 fm); a helium atom (60 pm); a bacterium (10 µm); a mosquito (1 mm); a baseball bat 1 m); a football field (100 m)?
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