Essential Cosmic Perspective
9th Edition
ISBN: 9780135795033
Author: Bennett
Publisher: PEARSON
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Question
Chapter 11, Problem 56EAP
(a)
To determine
To Find: The surface area of the sphere in square meters.
b.
To determine
The power passing through each square meter of this sphere in watts per square meter.
(c)
To determine
To Explain: The average power per square meter collected by a solar collector on the ground will always be less.
(d)
To determine
To Explain: The direction in which the solar collector on the roof should be oriented, if one wants to optimize the amount of power collected.
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1) What is thermal equilibrium? Is the Sun in thermal equilibrium? How do we know this?
2) In order to maintain thermal equilibrium, how much energy must the Sun generate every second?
1. Suppose you observe a tight eclipsing binary with orbital period of 3 days, and radial velocity semi-amplitude for both components of 80 kilometers/second.
a. Without doing any calculation, you know that the mass ratio of the binary is 1:1. Explain why?
b. What are the masses and orbital radii of the two stars?
c. Suppose the binary is perfectly aligned so each eclipse the center of one star goes across the other. How often do you see an eclipse?
d. Suppose one eclipse lasts for 3.5 hours. What is the radius of the stars?
As a star runs out of hydrogen to fuel nuclear fusion in its core, changes within the star usually cause it to leave the main sequence, expanding and cooling as it does so. Would a star with a radius 6 times that of the Sun, but a surface temperature 0.4 times that of the Sun, be more, or less luminous than the Sun?
Show and explain your reasoning.
You may assume the surface area of a sphere is A = 4πr2.
Chapter 11 Solutions
Essential Cosmic Perspective
Ch. 11 - Prob. 1VSCCh. 11 - Prob. 2VSCCh. 11 - Prob. 3VSCCh. 11 - Prob. 1EAPCh. 11 - Prob. 2EAPCh. 11 - Prob. 3EAPCh. 11 - Prob. 4EAPCh. 11 - Prob. 5EAPCh. 11 - Prob. 6EAPCh. 11 - Prob. 7EAP
Ch. 11 - Prob. 8EAPCh. 11 - Prob. 9EAPCh. 11 - Prob. 10EAPCh. 11 - Prob. 11EAPCh. 11 - Prob. 12EAPCh. 11 - Prob. 13EAPCh. 11 - Prob. 14EAPCh. 11 - Prob. 15EAPCh. 11 - Prob. 16EAPCh. 11 - Prob. 17EAPCh. 11 - Prob. 18EAPCh. 11 - Prob. 19EAPCh. 11 - Prob. 20EAPCh. 11 - Prob. 21EAPCh. 11 - Prob. 22EAPCh. 11 - Prob. 23EAPCh. 11 - Prob. 24EAPCh. 11 - Prob. 25EAPCh. 11 - Which of these groups of particles has the...Ch. 11 - Prob. 27EAPCh. 11 - Prob. 28EAPCh. 11 - Prob. 29EAPCh. 11 - Prob. 30EAPCh. 11 - Prob. 31EAPCh. 11 - Prob. 32EAPCh. 11 - Prob. 33EAPCh. 11 - 34. What causes the cycle of solar activity? (a)...Ch. 11 - 35. Which of these things poses the greatest...Ch. 11 - Prob. 37EAPCh. 11 - Prob. 38EAPCh. 11 - Prob. 39EAPCh. 11 - Prob. 41EAPCh. 11 - Prob. 42EAPCh. 11 - Prob. 43EAPCh. 11 - Prob. 44EAPCh. 11 - Prob. 45EAPCh. 11 - Prob. 46EAPCh. 11 - Prob. 47EAPCh. 11 - Prob. 48EAPCh. 11 - Research: Current Solar Weather. Daily information...Ch. 11 - Prob. 51EAPCh. 11 - Prob. 52EAPCh. 11 - Prob. 53EAPCh. 11 - Prob. 54EAPCh. 11 - Prob. 55EAPCh. 11 - Prob. 56EAP
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