Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 35Q
To determine
The Kirchhoff’s law that can be applied to describe the situation, the street lamps from sodium vapor that emits light by emission lines of the wavelength
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Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 × 10-¹⁹ J.
(a) a photon having a frequency of 7.80 x 1017 Hz
eV
(b) a photon having a wavelength of 2.00 x 10² nm
eV
The temperature of an object is 310 K. The electromagnetic radiation emitted by this object is:
O in the ultraviolet region of the spectrum.
O in the microwave region of the spectrum.
O in the visible region of the spectrum (red).
O in the visible region of the spectrum (yellow).
O in the visible region of the spectrum (violet)..
O in the infrared region of the spectrum.
The graph below is solar power PER VOLT that reaches the ground as a function
of photon energy in eV. Which color below represents the maximum of the Sun's
power per volt?
Spectral parts
IR-C IR-B IR-A
700
VIS
UVA UVB
600
500
400
300
200
100
2
Photon energy [eV]
violet
blue
green
red
invisible infrared (because the photon energy is lower than red)
invisible ultraviolet (because the photon energy is higher than violet)
Spectral irradiance [W/m?eV]
Chapter 5 Solutions
Universe
Ch. 5 - Prob. 1CCCh. 5 - Prob. 2CCCh. 5 - Prob. 3CCCh. 5 - Prob. 4CCCh. 5 - Prob. 5CCCh. 5 - Prob. 6CCCh. 5 - Prob. 7CCCh. 5 - Prob. 8CCCh. 5 - Prob. 9CCCh. 5 - Prob. 10CC
Ch. 5 - Prob. 11CCCh. 5 - Prob. 12CCCh. 5 - Prob. 13CCCh. 5 - Prob. 14CCCh. 5 - Prob. 1CLCCh. 5 - Prob. 2CLCCh. 5 - Prob. 3CLCCh. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9QCh. 5 - Prob. 10QCh. 5 - Prob. 11QCh. 5 - Prob. 12QCh. 5 - Prob. 13QCh. 5 - Prob. 14QCh. 5 - Prob. 15QCh. 5 - Prob. 16QCh. 5 - Prob. 17QCh. 5 - Prob. 18QCh. 5 - Prob. 19QCh. 5 - Prob. 20QCh. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - Prob. 29QCh. 5 - Prob. 30QCh. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - Prob. 40QCh. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 47QCh. 5 - Prob. 48QCh. 5 - Prob. 49QCh. 5 - Prob. 50QCh. 5 - Prob. 51Q
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- Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 10-19 J.(a) a photon having a frequency of 7.20 1017 Hz eV (b) a photon having a wavelength of 5.00 102 nm eVarrow_forward(a) Calculate the wavelength of light in vacuum that has a frequency of 5.06 x 10 18 nm (b) What is its wavelength in flint glass? nm (c) Calculate the energy of one photon of such light in vacuum. Express the answer in electron volts. eV (d) Does the energy of the photon change when it enters the flint glass? The energy of the photon changes. The energy of the photon does not change. Hz. Explain.arrow_forwardThe photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 7.5 x 10-20 J, what is the minimum wavelength? What is the frequency of light that can be detected? c = 2.998 x 10 m/s h = 6.626 x 10-34 J s marrow_forward
- Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 x 10 19 J. (a) a photon having a frequency of 2.30 x 1017 Hz (b) a photon having a wavelength of 2.50 x 102 nmarrow_forwardThe surface temperature of the naked-eye star Capella (in constellation Auriga) is approximately 4,700 degrees Celsius.a) What is the peak frequency (in hertz) and wavelength (in metres AND nanometres) of Capella’s emitted light?b) If you were to look at Capella in the night sky, what colour would you expect it to appear? Why would you expect this colour?arrow_forward(a) How many minutes does it take a photon to travel from the Sun to the Earth? in minutes (b) What is the energy in eV of a photon with a wavelength of 533 nm? in eV (c) What is the wavelength (in m) of a photon with an energy of 1.03 eV? in metersarrow_forward
- The photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 6.4 x 10-20 J, what is the minimum wavelength? What is the frequency of light that can be detected? c = 2.998 x 10° m/s h = 6.626 x 10-34 J s s-1 Submit Answer Retry Entire Group No more group attempts remainarrow_forward1A photon carries 2.56 eV of energy. What is the photon’s frequency? (h = 6.626 x 10-34 J·s; 1 eV = 1.60 x 10-19 J) 6.03 x 1014 Hz 1.70 x 1014 Hz 3.86 x 1014 Hz 2.71 x 1014 Hz 2The frequency of violet light is 7.5 x 1014 Hz. How much energy does a photon of violet light carry? (h = 6.626 x 10-34 J·s; 1 eV = 1.60 x 10-19 J) 0.148 eV 2.73 x 10-2 eV 3.14 x 10-3 eV 3.11 eV 3During a photoelectric effect experiment, light possessing 2.53 eV of energy is incident on the photosensitive material. Electrons are emitted with an energy of 1.71 eV of energy. What is the work function of the material? 4.24 eV 2.53 eV 1.71 eV 0.82 eVarrow_forwardUse the following information to answer the next question A farmer uses a sunscreen that contains para-amino benzoic acid (PABA). Absorption Spectrum of PABA Absorption by PÁBA 220 230 240 250 260 270 280 290 300 310 320 330 340 Wavelength (nm) 26. The PABA in the sunscreen absorbs radiation that has a frequency of approximately O 8.0x1012 Hz O80 Hz O 8.8x10-16 Hz 1.1x1015 Hz Your reasoning: Written Response Relative degree of absorptionarrow_forward
- Approximately how many volts would absorbing red photons create in a solar cell?(remember that eV stands for electron-volt] Spectral parts IR-C IR-B IR-A VIS UVA UVB 700 600 500 400 300 200 100 1. 3 Photon energy [eV] 1.7 2.5 3.2 3.8 Spectral irradiance [W/m?eV]arrow_forwardFind the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 × 10-19 J. (a) a photon having a frequency of 5.40 × 1017 Hz ev (b) a photon having a wavelength of 8.00 x 10² nm eV Need Help? Master Itarrow_forwardA solar panel is a square 0.5 m on a side and absorbs all the light that hits it. If the panel has a mass of 3 kg, what intensity of light would be necessary to hold it up against the force of gravity (its own weight)? How much bigger is this than the solar constant (1400 W/m²)? Edit Format Table 12pt v Paragraph v BIU A ev Tv||| EV =arrow_forward
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