COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 26, Problem 38QAP
To determine
Energy of a x-ray photon (
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h = 6.63 x 10-34 J • s;
c = 3.00 × 108 m/s;
me = 9.11 × 10-³1 kg
My
potassium surface is illuminated by a monochromate leser light with a wavelength of 400
nm Determine the maximum speed of a photoelectron emitted from this surface if the
-31
potassium surface has a work function of 2.30 ev. m
8.11 x 40
kg
2. A photon has a frequency of 7.50 x 10¹4 Hz,
a. Determine the energy and the momentum of this photon.
b. If all the energy of this photon were to be converted to mass, determine the equivalent
mass for the particle.
c. A microscopic specimen has a wavelength of 8.2 × 10-¹4m and a speed of
1.1 x 105 m/s. Determine the mass of this microscopic specimen.
Three light sources are shone onto a plant:
i)
ii)
iii)
How much light (i.e. total number of photons) is available for the plant to use for photosynthesis over an 8 hr
photoperiod, considering the plant has a total leaf area of 0.175 m?
320 nm at an intensity of 200 umol photons.ms
440 nm at an intensity of 300 umol photons.ms
675 nm at an intensity of 300 umol photons.ms'
• A beam of light with intensity of 3mW and a wavelength of 742 nm isstriking a solar cell. Estimate the number of photons incident on thecell.
Chapter 26 Solutions
COLLEGE PHYSICS
Ch. 26 - Prob. 1QAPCh. 26 - Prob. 2QAPCh. 26 - Prob. 3QAPCh. 26 - Prob. 4QAPCh. 26 - Prob. 5QAPCh. 26 - Prob. 6QAPCh. 26 - Prob. 7QAPCh. 26 - Prob. 8QAPCh. 26 - Prob. 9QAPCh. 26 - Prob. 10QAP
Ch. 26 - Prob. 11QAPCh. 26 - Prob. 12QAPCh. 26 - Prob. 13QAPCh. 26 - Prob. 14QAPCh. 26 - Prob. 15QAPCh. 26 - Prob. 16QAPCh. 26 - Prob. 17QAPCh. 26 - Prob. 18QAPCh. 26 - Prob. 19QAPCh. 26 - Prob. 20QAPCh. 26 - Prob. 21QAPCh. 26 - Prob. 22QAPCh. 26 - Prob. 23QAPCh. 26 - Prob. 24QAPCh. 26 - Prob. 25QAPCh. 26 - Prob. 26QAPCh. 26 - Prob. 27QAPCh. 26 - Prob. 28QAPCh. 26 - Prob. 29QAPCh. 26 - Prob. 30QAPCh. 26 - Prob. 31QAPCh. 26 - Prob. 32QAPCh. 26 - Prob. 33QAPCh. 26 - Prob. 34QAPCh. 26 - Prob. 35QAPCh. 26 - Prob. 36QAPCh. 26 - Prob. 37QAPCh. 26 - Prob. 38QAPCh. 26 - Prob. 39QAPCh. 26 - Prob. 40QAPCh. 26 - Prob. 41QAPCh. 26 - Prob. 42QAPCh. 26 - Prob. 43QAPCh. 26 - Prob. 44QAPCh. 26 - Prob. 45QAPCh. 26 - Prob. 46QAPCh. 26 - Prob. 47QAPCh. 26 - Prob. 48QAPCh. 26 - Prob. 49QAPCh. 26 - Prob. 50QAPCh. 26 - Prob. 51QAPCh. 26 - Prob. 52QAPCh. 26 - Prob. 53QAPCh. 26 - Prob. 54QAPCh. 26 - Prob. 55QAPCh. 26 - Prob. 56QAPCh. 26 - Prob. 57QAPCh. 26 - Prob. 58QAPCh. 26 - Prob. 59QAPCh. 26 - Prob. 60QAPCh. 26 - Prob. 61QAPCh. 26 - Prob. 62QAPCh. 26 - Prob. 63QAPCh. 26 - Prob. 64QAPCh. 26 - Prob. 65QAPCh. 26 - Prob. 66QAPCh. 26 - Prob. 67QAPCh. 26 - Prob. 68QAPCh. 26 - Prob. 69QAPCh. 26 - Prob. 70QAPCh. 26 - Prob. 71QAPCh. 26 - Prob. 72QAPCh. 26 - Prob. 73QAPCh. 26 - Prob. 74QAPCh. 26 - Prob. 75QAPCh. 26 - Prob. 76QAPCh. 26 - Prob. 77QAPCh. 26 - Prob. 78QAPCh. 26 - Prob. 79QAPCh. 26 - Prob. 80QAPCh. 26 - Prob. 81QAPCh. 26 - Prob. 82QAPCh. 26 - Prob. 83QAPCh. 26 - Prob. 84QAPCh. 26 - Prob. 85QAPCh. 26 - Prob. 86QAPCh. 26 - Prob. 87QAPCh. 26 - Prob. 88QAPCh. 26 - Prob. 89QAPCh. 26 - Prob. 90QAPCh. 26 - Prob. 91QAPCh. 26 - Prob. 92QAPCh. 26 - Prob. 93QAPCh. 26 - Prob. 94QAPCh. 26 - Prob. 95QAPCh. 26 - Prob. 96QAPCh. 26 - Prob. 97QAPCh. 26 - Prob. 98QAPCh. 26 - Prob. 99QAPCh. 26 - Prob. 100QAPCh. 26 - Prob. 101QAPCh. 26 - Prob. 102QAPCh. 26 - Prob. 103QAPCh. 26 - Prob. 104QAP
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- (a) How far away must you be from a 650-kHz radio station with power 50.0 kW for there to be only one photon per second per square meter? Assume no reflections or absorption, as if you were in deep outer space. (b) Discuss the implications for detecting intelligent life in other solar systems by detecting their radio broadcasts.arrow_forwardHow many x-ray photons per second are created by an x ray tube that produces a flux of x rays having a power of 1.00 W? Assume the average energy per photon is 75.0 keV.arrow_forwardAn x ray tube has an applied voltage of 100 kV. (a) What is the most energetic x-ray photon it can produce? Express your answer in electron volts and joules. (b) Find the wavelength of such an X—ray.arrow_forward
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- 1. X-ray photons of wavelength 0.02480 nm are incident on a target and the Compton- scattered photons are observed at 90.0 •. (a) What is the wavelength (in nm) of the scattered photons? (b) What is the momentum of the incident photons? Of the scattered photons? (c) What is the kinetic energy of the scattered electrons? (d) What is the momentum (magnitude and direction) of the scattered electrons?arrow_forwardQuestion 18 A photon having wavelength A scatters off a free electron at A (see figure), producing a second photon having wavelength A'. This photon then scatters off another free electron at B, producing a third photon having wavelength A" and moving in a direction directly opposite the original photon as shown in the figure. Determine the value of Aλ =λ" -λ. Electron 1 Electron 2arrow_forwardFind the energy of the following. Express your answers in units of electron volts, noting thet 1 eV = 1.60 x 10 19 J. (a) a photon having a frequency of 7.40 x 10 Hz 3066.375 • V ev (b) a photon having a wavelength of 8.60 x 10 nm 3.56E-12 Calculate the frequency of light carresponding to the given wavelength and from the frequency calculate the energy of a photon with that wavelength. eV Need Help? Read It Master Itarrow_forward
- 1-Which of the following are consistent with the wave-like behavior of light? .Line Spectra • Blackbody Radiation • Refraction • Diffraction • The Photoelectric Effect 2-What is the value of c? 0 3.00 × 108 J-s 0 6.636 × 10-34 J-s 0 3.00 × 108 m/s 0 6.02 × 1023 m/s 3-Which of the following are consistent with the wave-like behavior of light? • Blackbody Radiation • Line Spectra • Diffraction • Refraction • The Photoelectric Effect 4-What is the correct value for Planck's constant? 0 3.00 × 108 J-s • 6.02 × 1023 m/s 0 3.00 x 108 m/s 0 6.626 × 10-34 J-s 5-Which regions of the electromagnetic spectrum are higher in frequency than microwaves? [Select all that apply.] • Visible .Infrared •X-Rays • Ultraviolet Gamma Rays •Radioarrow_forwardA light source of wavelength λ illuminates a metal and ejects photoelectrons with a maximum kinetic energyof 1.00 eV. A second light source with half the wavelength of the first ejects photoelectrons with a maximumkinetic energy of 4.00 eV.• Determine the work function of the metalarrow_forward1-Which of the following are consistent with the wave-like behavior of light? .Line Spectra • Blackbody Radiation • Refraction • Diffraction • The Photoelectric Effect 2-What is the value of c? O 3.00 x 108 J-s O 6.636 × 10-34 J-s O 3.00 x 108 m/s O 6.02 x 1023 m/s 3-Which of the following are consistent with the wave-like behavior of light? • Blackbody Radiation • Line Spectra • Diffraction • Refraction • The Photoelectric Effect 4-What is the correct value for Planck's constant? O 3.00 x 108 J-s • 6.02 × 1023 m/s O 3.00 x 108 m/s O 6.626 × 10-34 J-s 5-Which regions of the electromagnetic spectrum are higher in frequency than microwaves? [Select all that apply.] • Visible .Infrared • X-Rays • Ultraviolet Gamma Rays .Radioarrow_forward
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