Compute the de Broglie wavelength of the following: (a) A 1000-kg automobile traveling at 100 m/s (about 200 mi/h). (b) A 10-g bullet traveling at 500 m/s. (c) A smoke particle of mass 109 g moving at 1 cm/s. (d) An electron with a kinetic energy of 1 eV. (e) An elec- tron with a kinetic energy of 100 MeV.

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