Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 16, Problem 16CC
To determine
Whether the sunspot cycle is an
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If a sunspot has a temperature of 4,270 K and the average solar photosphere has a temperature of 5,780 K, how many times more energy is emitted in 1 second from a square meter of the photosphere compared to a square meter of the sunspot? (Hint: Use the Stefan-Boltzmann law,
E = σT4 (J/s/m2)
where E is the energy, σ is a proportionality constant equal to 5.67 ✕ 10−8 J/s/m2/K4, and T is the temperature in kelvins.)
Why does nuclear fusion only take place in the Sun’s core?
Describe what the Sun would look like from Earth if the entire photosphere were the same temperature as a sunspot.
Chapter 16 Solutions
Universe
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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
- Assuming an average sunspot cycle of 11 years, how many revolutions does the equator of the Sun make during that one cycle? Do higher latitudes make more or fewer revolutions compared to the equator?arrow_forwardWhy do sunspots look dark?arrow_forwardIf a sunspot has a temperature of 4200 K and the average solar photosphere has a temperature of 5780 K, how much more energy is emitted in 1 second from a square meter of the photosphere compared to a square meter of the sunspot? (Hint: Use the Stefan-Boltzmann law, Eq. 7-1.)arrow_forward
- Which aspects of the Sun’s activity cycle have a period of about 11 years? Which vary during intervals of about 22 years?arrow_forwardWhy does convection develop about 70% of the way from the Sun's center to its surface?arrow_forwardDuring the Maunder minimum a. solar brightness dropped slightly b. the average surface temperature of the sun dropped c. few sunspots were observedarrow_forward
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