An electron has velocity v = 2.0×10^7 m/s. What is its de Broglie wavelength? (m_e = 9.11×10^-31 kg, h = 6.626×10^-34 J·s)

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An electron has velocity v = 2.0×10^7 m/s. What is its de Broglie wavelength? (m_e = 9.11×10^-31 kg, h = 6.626×10^-34 J·s)

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