The Cosmic Perspective Fundamentals (2nd Edition)
2nd Edition
ISBN: 9780133889567
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 8QQ
Choose the best answer to each of the following. Explain your reasoning.
What would you be most likely to find if you returned to the solar system in 10 billion years? (a) a neutron star (b) a white dwarf (C) a black hole
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The time it takes for a cloud 106,000 AU in radius
to collapse in "free-tall to form a new star is half
the time it would take for an object to orbit the star
on an extremely elliptical orbit with a semimajor
axis of 53,000 AU (half the 106.000 AU radius).
Part A
Use Kepler's third law to find the collapse time, assuming the star has the same mass as the Sun.
Express your answer in years to two significant figures.
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years
Using MBH
=
6.6 × 10 Mo, calculate the below.
a. Find radius of the Schwarzschild sphere (Schwarzschild radius Rs). You
can calculated from the appropriate formula or just use the fact that for
an object of 1 solar mass Rs = 3 km.
b. Express Rs in km, in AU, in parsecs.
c. Using the distance to M87 and your result above, find angular radius of
the SMBH (Schwarzschild radius). Express it in arcseconds (") and micro-
arcseconds (pas)
d. Take the radius of Pluto's orbit equal to 40 AU and find its angular size
(in micro-arcseconds, pas) at the distance of M87.
Please please solve accurate and exact please fast within 25 minutes please thanks
Chapter 9 Solutions
The Cosmic Perspective Fundamentals (2nd Edition)
Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Prob. 2QQCh. 9 - Prob. 3QQCh. 9 - Prob. 4QQCh. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....
Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Choose the best answer to each of the following....Ch. 9 - Explain all answers clearly, with complete...Ch. 9 - Explain all answers clearly, with complete...Ch. 9 - Explain all answers clearly, with complete...Ch. 9 - Prob. 16SEQCh. 9 - Explain all answers clearly, with complete...Ch. 9 - Explain all answers clearly, with complete...
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