Physics

Problem

Calculate the de Broglie wavelength of an electron moving with speed

2.0\times10^{6}\,\text{m s}^{-1}

. \,(Take

h = 6.63\times10^{-34}\,\text{J s}

and

m_e = 9.11\times10^{-31}\,\text{kg}

.) a)

0.18\,\text{nm}

1.44\,\text{nm}

0.36\,\text{nm}

0.72\,\text{nm}