Calculate the de Broglie wavelength for a proton moving with a speed of 1.00 ×106 m/s.
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- An electron is in a box of width 3.0 * 10-10 m. What are the de Broglie wavelength and the magnitude of the momentum of the electron if it is in the n = 1 level.If the photoelectric work function of a metal is 5 eV, calculate the threshold frequency for the metal. Given : Planck's constant = 6.6 x 10-34 Js. 1 eV = 1.6 × 10-19 V.A certain atom remains in an excited state for about 51.7 ns before emitting a 2.15-eV photon and transitioning to the ground state. What is the uncertainty in the frequency of the photon in Hz?
- An electron of mass 9.11 × 10−31 kg and a bowling ball of mass 6.00 kg each have 4.50 eV of kinetic energy. Calculate the de Broglie wavelength of the electron: Calculate the wavelength of a 4.50 eV photon:A photon has an energy E and wavelength l before scattering from a free electron. After scattering through a 135° angle, the photon’s wavelength has increased by 10.0%. Find the initial wavelength and energy of the photon.Assuming that the smallest measurable wavelength in an experiment is 0.650 fm , what is the maximum mass of an object traveling at 815 m⋅s−1 for which the de Broglie wavelength is observable?