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**Problem**: The mass of an electron is 9.11x10 -31 kg . If the de Broglie wavelength for an electron in a hydrogen atom is 3.31x10-10 m , how fast is the electron moving relative to the speed of light? The speed of light is 3.00 x 108 m/s . Express your answer numerically as a percentage of the speed of light.

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The mass of an electron is 9.11x10 ^{-31 }kg . If the de Broglie wavelength for an electron in a hydrogen atom is 3.31x10^{-10 }m , how fast is the electron moving relative to the speed of light? The speed of light is 3.00 x 10^{8 }m/s . Express your answer numerically as a percentage of the speed of light.

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The mass of an electron is 9.11x10 -31 kg . If the de Brogli...
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