Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 5, Problem 16Q
To determine
The surface temperature of the brightest stars in the given image and the region of the
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Choose the correct statements concerning the elec- tromagnetic spectrum given off by stars. (Give ALL correct answers, i.e., B, AC, BCD...)A) If we see a blue star and a red star in a nearby star cluster, we know the red star is hotter.B) Blue photons are more energetic than red photons.C) Hot stars are much brighter than cool stars of the same size and distance from the Earth.D) Blue photons (blue light) have a longer wavelength than red photons.E) A hot star will be more red in color than a cooler star. F) All stars are the same color as our Sun.
If you see a red-hot star, you can be certain that its peak intensity is in the infrared region. Why is this?
Suppose YOUR body temperature averages 98.6 F.
1. How much radiant energy in Wm^-2 is emitted from YOUR body?
2. What is the total radiant energy in W that is emitted from YOUR body?
3. At what wavelength does YOUR body emit the largest amount of radiant energy?
Chapter 5 Solutions
Universe
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Star X has lines of ionized helium in its spectrum, and star Y has bands of titanium oxide. Which is hotter? Why? The spectrum of star Z shows lines of ionized helium and also molecular bands of titanium oxide. What is strange about this spectrum? Can you suggest an explanation?arrow_forwardAn idealized radiating object does not reflect or scatter any radiation but instead absorbs all of the electromagnetic energy that falls on it. Can you explain why astronomers call such an object a blackbody? Keep in mind that even stars, which shine brightly in a variety of colors, are considered blackbodies. Explain why.arrow_forwardHow many watts of radiation does a 1-meter-square region of the Sun’s spot emit, at a temperature of 5000 K? How much would the wattage increase if the temperature of the spot were twice as much, 10 000 K?arrow_forward
- humans can typically see light in the range of 400 to 700 nm. however, some animals can see wavelengths outside of this range. for instance bees and some spiders can see ultraviolet light, while snakes and other reptiles have vision extending to the infrared wavelengths. what adaptive advantages might this extended vision offer these animalsarrow_forwardThe hydra constellation in a distant sky island is moving away from Earth at a velocity of 6.12 × 107m / s. How far does the green spectral line emitted by this celestial island, with a wavelength of 500 nm, shift towards the red end of the spectrum?arrow_forwardImagine that you are observing a star and you find the wavelength of peak emission for the star to be 500 nm. What would the wavelength of peak emission be for a new star that has a surface temperature that is a third of the original star?arrow_forward
- Select average representative temperatures for 1) the average Earth surface, 2) the Sun, 3) a typical cloud, and 4) typical snow and calculate:a) The rate of electromagnetic energy emission for each surface in Wm-2, assuming all surfaces are blackbodies.b) The wavelength of maximum radiation in mum and determine the portion of the spectrum in which it occurs.arrow_forwardWhat is the energy of an ultraviolet photon with wavelength 100 nm? What is the frequency of an ultraviolet photon with wavelength 119 nm? What is the wavelength of a radio photon from an "AM" radio station that broadcasts at 1420 kilohertz?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_forward
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