The electron emitted from a hot filament is accelerated in an electric field until its velocity is 4.5x10^9 dm/s. Find the wavelength of the electron (pm). A. 0.660 B. 1.616 C. 0.009 D. 0.146

Which of the following statements are true? Choose all that are. a. A photon has kinetic energy. b. Electrons have a wavelength. c. If photon A has a larger momentum than photon B, photon A must be moving faster than photon B. d. For the Photoelectric Effect, light with a frequency above the cutoff frequency will result in no electrons being ejected.

9. T/F a. Perfect absorbers of electromagnetic radiation are also perfect emitters. b. At any instant in time, it is possible to specify simultaneously the position and the momentum of a particle to arbitrarily high precision. C. The ground state is the lowest energy level in an atom. d. Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of polarization. e. A light ray bends when it goes from one medium to another because of diffraction.

MY NOTES ASK YOUR TEACHER PRACTICE ANOTH OBINPHYS8 10.P.005. DETAILS Electrons striking the back of a conventional TV screen travel at a speed of about 1.5 x 107 m/s. What is their de Broglie wavelength (in nm)? nm Need Help? Read It DETAILS OBINPHYS8 10.P.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTH If a proton were traveling the same speed as electrons in a TV picture tube (about 7.7 x 107 m/s), what would its de Broglie wavelength be? The mass of a proton is 1.67 x 10-27 kg. m Need Help? Read It Watch It