The mass of an electron is 9.1110 31 kg 9.11times 10^{ -31}~rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.3110 10 m 3….

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The mass of an electron is 9.11×10 −31 kg 9.11times 10^{ -31}~rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31×10 −10 m 3.31times 10^{ -10}~rm m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00×10 8 m/s 3.00times10^8 ~rm m/s. Express your answer numerically as a percentage of the speed of light.

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