Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 13Q
To determine
The reason behind the interest of astrologers into the blackbody
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Describe what happens to the blackbody spectrum as you increase or decrease the temperature. What happens to the shape of the curve and the peak of this curve? Explain it in a detailed way.
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Chapter 5 Solutions
Universe: Stars And Galaxies
Ch. 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. 10Q
Ch. 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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- Photons of a certain infrared light have an energy of 1.21X 10^-19 J. What is the frequency of this IR light? Use ? = c/f to calculate its wavelength in nanometers.arrow_forwardChoose the correct statements concerning the electromagnetic spectrum given off by stars. (Give ALL correct answers, i.e., B, AC, BCD...) A) Blue photons are more energetic than red photons. B) A hot star will be more red in color than a cooler star. C) All stars are the same color as our Sun. D) Hot stars are much brighter than cool stars of the same size and distance from the Earth. E) If we see a blue star and a red star in a nearby star cluster, we know the red star is hotter. F) Blue photons (blue light) have a longer wavelength than red photons.arrow_forwardExplain how emission lines and absorption lines are formed. In what sorts of cosmic objects would you expect to see each?arrow_forward
- Describe what happens to the blackbody spectrum as you increase or decrease the temperature. What happens to the shape of the curve and the peak of this curve?arrow_forwardexplain how emission and absorption involve semiclassical physics?arrow_forwardDescribe the ultraviolet catastrophe and how it shaped scientists’ understanding of light.arrow_forward
- A photon has a wavelength of 581 nm. What is the energy of the photon (in units of 10-19 Joules)? Your Answer: Answerarrow_forwardlevel an ther will such radars disturb such radio astronomy measurements 4. If the intensity of the Sun peaks in the optical range, at a frequency of about 3:4 x 10 Hz, what is the temperature of the Sun? Use the Wien displacement law (1.25). If all of the power is emitted only between 3 and 4 x 10 Hz, how many photons per cm² arrive at the earth when the Sun is directly overhead? What is the power received on earth per cm³? A value for the solar power is 135mW per cm². How does this compare to your calculation?arrow_forwardDescribe how photons of light can be produced in a hot gas.arrow_forward
- What will be the energy associated with a blue photon (in Joules), if the frequency of the blue light is 650 THz (Terahertz (THz); 1 Tera – 1012y? [Hint: Use Planck's cquation: E = hf to calculate the photon energy! h - Planck's constant – 6,63 × 10-4 Js – 4.14 ×1015 eVs] A. 650×1012 J B. 6.5×10° J C. 4.3x1015 J D. 4.3×10-19 J E. 4.3x1019 Jarrow_forwardCalculate the energy emitted by a blackbody at 1000°C per square meter?arrow_forwardA photon has wavelength of (λ = 695 pm). Does this photon have enough energy to ionize a hydrogen atom? Show DETAILED calculations to support your answer in the following format. It's a must for me! Its not that complex of a question. you guys have answered a question like this before. please and thank you. What are you solving for? What should be the units of your final answer? What information are you given? What information do you need? How will you connect the information you have and the information you need to solve this problem? (Provide a unit plan) Solve the problem. Be sure to show all units and write clearly. Does your answer make sense? How do you know? Thank youarrow_forward
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