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The de Broglie wavelength of an electron is 8.7 × 10-11 m. The mass of an electron is 9.1 × 10-31 kg. The velocity of this electron is __________ m/s.

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The de Broglie wavelength of an electron is 8.7 × 10<sup>-1</sup>1 m. The mass of an electron is 9.1 × 10-31 kg. The velocity of this electron is __________ m/s.


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