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Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 16, Problem 46Q
To determine
The solar cycle is actually
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Students have asked these similar questions
Why does convection develop about 70% of the way from the Sun's center to its surface?
During the Maunder minimum
a. solar brightness dropped slightly
b. the average surface temperature of the sun dropped
c. few sunspots were observed
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.)
Chapter 16 Solutions
Universe
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- Why do sunspots look dark?arrow_forwardAssuming 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_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_forwardUsing the concept of hydrostatic equilibrium, explain why the Sun does not collapse under the weight of its own gravity.arrow_forwardIn a typical solar oscillation, the Sun’s surface moves up or down with a speed of 0.1m/s . If you were to try to measure this speed using the Doppler shift of the absorption line for Iron which has a wavelength of 557.6099nm, what is the longest wavelength you will see?arrow_forward
- Assume that Hydrogen comprises 74% of the Suns' mass. How much mass is this?arrow_forwardWhich of the following layers of the Sun can be seen with some type of telescope? Consider all forms of light, but do not consider neutrinos or other particles. (Give ALL correct answers in alphabetical order, i.e., B, AC, BCD...)A) Corona.B) Photosphere.C) Radiation Zone.D) Chromosphere.E) Convection Zone.F) Core.arrow_forward
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