College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- A photon with an energy of 3-eV is absorbed by a certain atom. Afterwards, three photons are spontaneously emitted. Which statement correctly describes the emitted photons? a.) The emitted photons each have the same wavelengths. b.) The photons are produced by a single electron energy-level transition. c.) The sum of the emitted photon energies equals 3 eV. d.) Three photons are always emitted when a 3-eV photon is absorbed.arrow_forward5.40x106 atoms are excited to an upper energy level at t = 0 s. At the end of 30.0 ns , 90.0% of these atoms have undergone a quantum jump to the ground state. You may want to review (Pages 1198 - 1200). Part A How many photons have been emitted? ΥΠ ΑΣφ ? photons Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the lifetime of the excited state? ην ΑΣφ ? ns Submit Request Answerarrow_forward1. The following graphical data was obtained for the wavefunction of a photon. The wavefunction is of the form Y(x) = Asin (Bx). a. Determine A. b. Determine B. c. Determine the wavelength,2, in meters (assume the x-axis of the graph is distance in meters). d. Determine the linear frequency, v, in s'¹. e. Determine the energy, E, of this photon in J.arrow_forward
- An electron in the Bohr model of the hydrogen atom makes a transition from n=4 energy level to n=2 energy level, calculate the frequency and the corresponding wavelength of the photon involved in. this transition. Is the photon absored or emitted? Explain.arrow_forwarda. The electron of a hydrogen atom is excited into a higher energy level from a lower energy level. A short time later the electron relaxes down to the no = 1 energy level, releasing a photon with a wavelength of 93.83 nm. Compute the quantum number of the energy level the electron relaxes from, nhi. Note: the Rydberg constant in units of wavenumbers is 109,625 cm-1 nhi =16 b. What would the wavenumber, wavelength and energy of the photon be if instead no = 1 and nhi = 4? V: 6.9121e14 x (cm-¹) λ: (nm) E: 45.8e-20 ✓ (1)arrow_forwardOnly part aarrow_forward
- a. What are the units for the Rydberg constant?arrow_forwardPart A What is the energy range (in joules) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = J Submit Request Answer Part B What is the energy range (in eV) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = eV Submit Request Answer Provide Feedbackarrow_forwardThe work function of cesium is 2.1 eV. ▾ Part A Determine the lowest frequency photon that can eject an electron from cesium. Express your answer with the appropriate units. Templates Symbols undo' rego Teset keyboard shortcuts Help Value Units Request Answer Part B Determine the maximum possible kinetic energy in electron volts of a photoelectron ejected from the metal that absorbs a 320-nm photon. Express your answer in electronvolts. Templates Symbols undo' redo Teset keyboard shortcuts Help Kmax= eV f= Submitarrow_forward
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