Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 12, Problem 10QAP
To determine
The property of accretion disk.
Expert Solution & Answer
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Check out a sample textbook solutionStudents have asked these similar questions
As a white dwarf cools, its radius will not change because
a.
pressure resulting from nuclear reactions in a shell just below the surface keeps it from collapsing.
b.
pressure does not depend on temperature for a white dwarf because the electrons are degenerate.
c.
pressure does not depend on temperature because the white dwarf is too hot.
d.
pressure does not depend on temperature because the star has exhausted all its nuclear fuels.
e.
material accreting onto it from a companion maintains a constant radius.
When a mass is transferred through the inner Lagrangian point in a binary system toward a white dwarf, the material forms a rapidly growing whirlpool of material known as a(n)
a.
accretion disk.
b.
Lagrangian point.
c.
Algol paradox.
d.
planetary nebula.
e.
supernova remnant.
What is the size of a typical white dwarf?
Group of answer choices
1.0 solar radii
0.5 solar radii
0.1 solar radii (roughly the size of Jupiter)
0.01 solar radii (roughly the size of Earth)
5 solar radii
Chapter 12 Solutions
Understanding Our Universe
Ch. 12.1 - Prob. 12.1CYUCh. 12.2 - Prob. 12.2CYUCh. 12.3 - Prob. 12.3CYUCh. 12.4 - Prob. 12.4CYUCh. 12.5 - Prob. 12.5CYUCh. 12.6 - Prob. 12.6CYUCh. 12 - Prob. 1QAPCh. 12 - Prob. 2QAPCh. 12 - Prob. 3QAPCh. 12 - Prob. 4QAP
Ch. 12 - Prob. 5QAPCh. 12 - Prob. 6QAPCh. 12 - Prob. 7QAPCh. 12 - Prob. 8QAPCh. 12 - Prob. 9QAPCh. 12 - Prob. 10QAPCh. 12 - Prob. 11QAPCh. 12 - Prob. 12QAPCh. 12 - Prob. 13QAPCh. 12 - Prob. 14QAPCh. 12 - Prob. 15QAPCh. 12 - Prob. 16QAPCh. 12 - Prob. 17QAPCh. 12 - Prob. 18QAPCh. 12 - Prob. 19QAPCh. 12 - Prob. 20QAPCh. 12 - Prob. 21QAPCh. 12 - Prob. 22QAPCh. 12 - Prob. 23QAPCh. 12 - Prob. 24QAPCh. 12 - Prob. 25QAPCh. 12 - Prob. 26QAPCh. 12 - Prob. 27QAPCh. 12 - Prob. 28QAPCh. 12 - Prob. 29QAPCh. 12 - Prob. 30QAPCh. 12 - Prob. 32QAPCh. 12 - Prob. 33QAPCh. 12 - Prob. 34QAPCh. 12 - Prob. 35QAPCh. 12 - Prob. 36QAPCh. 12 - Prob. 37QAPCh. 12 - Prob. 38QAPCh. 12 - Prob. 39QAPCh. 12 - Prob. 40QAPCh. 12 - Prob. 42QAPCh. 12 - Prob. 43QAPCh. 12 - Prob. 44QAPCh. 12 - Prob. 45QAP
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- How does a white dwarf differ from a neutron star? How does each form? What keeps each from collapsing under its own weight?arrow_forwardWhat is the escape velocity from the white dwarf in Exercise 23.35? How much greater is it than the escape velocity from Earth?arrow_forwardWhat is the luminosity, in solar units, of a brown dwarf whose radius is 0.1 solar radii and whose surface temperature is 600 K (0.1 times that of the Sun)?arrow_forward
- fill in missing word a) One difference between a type I and type II supernova is the formation of the element _________ in the core that produces a type II supernova b) The Chandrasekhar limit of a star (1.4 solar masses) is the mass limit above which a star cannot remain stable as a ________ ________. c) The temperature of a red giant star is ____________ than it was when the star was a dwarf.arrow_forwardQ7// a- Estimate the density of a white dwarf if it has a solar mass packed into a sphere with approximately 10² Ro b- For a white dwarf of density 1.0 x 10° g/cm3, and Z/A = 0.5, estimate the degeneracy pressure and compare it with the thermal pressure of a gas at a temperature of 1.0 x10' K.arrow_forwardThe Sun's mass is 2.0x1030 kg, its radius is 7.0x105 km, and it has a rotational period of approximately 28 days. If the Sun should collapse into a white dwarf of radius 3.7x103 km, what would its period be if no mass were ejected and a sphere of uniform density can model the Sun both before and after? 60.40 s Incorrect. Tries 10/10 Previous Triesarrow_forward
- 1. The neutrino flux from SN 1987A was estimated to be 1.3 x 1014 m-2 at the location of Earth. If the average energy per neutrino was approximately 4.2 MeV, estimate the total amount of energy in joules released via neutrinos during the supernova explosion. (SN 1987A was located in the LMC at a distance of 50 kpc.).arrow_forwardWhy are red dwarfs very dim.arrow_forwardA Type Ia Supernova is an example of a:arrow_forward
- Why does a type II supernova explode? in two sentences.arrow_forwardSay that a white dwarf has about the same radius as the earth and about the same mass as the sun. Quantitatively compare the bulk density of the white dwarf to the bulk density of the sun.arrow_forwardA distant Nebula is now 2.35 pc in radius and is expanding at 1100 km/s. Approximately when did the supernova occur?arrow_forward
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