24If the Temperature of the core of a supernova is 3200 x 1023 K, what should be the average translational kinetic energy of the particles moving inside this supernov(Boltzmann's constant = 1.38 x 10-23 J/K)Type your answer...

Answered: 24 If the Temperature of the core of a…

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter9: The Formation And Structure Of Stars

Section: Chapter Questions

Problem 2P

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A main sequence star of mass, M, and radius, R, collapses to a white dwarf star with a radius 1.0% as big as the original star. If ω is the angular velocity of the original star, what is the angular velocity of the white dwarf star? Approximate the star to be a uniform solid sphere. a. 20,000ω b. 10,000ω c. 50,000ω d. 1,000ω e. 5,000ω
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Models of the first star-forming clouds indicate that they had a temperature of roughly 150 K and a particle density of roughly 400,000 particles per cubic centimeter at the time they started trapping their internal thermal energy. ▼ Part A Estimate the mass at which thermal pressure balances gravity for these values of pressure and temperature. Express your answer in kilograms. —| ΑΣΦ Mcloud Submit Part B = Mcloud How does that mass compare with the Sun's mass? Express your answer in solar masses. Submit Request Answer = ΤΙ ΑΣΦ Request Answer ? ? kg MSun Review
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1. Determine the radius of the event horizon if a star of mass 11 x 1030 kg explodes into a supernova and collapse in on it to form a black hole.
v Correct Part C Which has a greater luminosity, a star with absolute magnitude -2 or a star with absolute magnitude 8 ? O A star with absolute magnitude 8. A star with absolute magnitude -2. Submit Previous Answers Correct Part D By how much? LM=-2 LM-8 000000001 Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Next > Provide Feedback P Pearson 8:58 PM (cp ツ 4/2/202 earson Education Inc. All rights reserved. | Terms of Use Privacy Policy Permissions Contact Us | 49°F Sunny
The initial stage of star formation is the collapse of a gravitationally unstable volume of gas within a molecular cloud. a Find the Jeans mass and radius for a molecular cloud at a temperature T = 10 K and number density n = 106 cm-3. Assume the mean particle mass is umH, where u 2.8. Give your answers in solar masses and au, respectively. b Assuming the molecular gas follows the ideal gas law, calculate |dP/dr| ~ JAP/Ar| Pe/ RJ (units [N m-³]) at the beginning of the collapse, where Pe is an approximate value for the central pressure of the cloud. Assume that P molecular cloud, and the mass and radius are the values determined above. 0 at the edge of the c Show that |dP/dr| is significantly smaller than GM,p/r. What can you interpret about the core's dynamics from this result? d Show that if the excess energy due to the change in gravitational potential energy during the core's collapse is radiated away efficiently, and the collapse is therefore isothermal, the contribution of dP/dr…
2GM What is the escape velocity (in km/s) from the surface of a 1.6 Mo neutron star? From a 3.0 M. neutron star? (Hint: Use the formula for escape velocity, V. ; make sure to express quantities in units of meters, kilograms, and seconds. Assume a neutron star has a radius of 11 km and assume the mass of the Sun is 1.99 x 1030 kg.) 1.6 Mo neutron star km/s 3.0 Me neutron star km/s
The initial stage of star formation is the collapse of a gravitationally unstable volume of gas within a molecular cloud. a Find the Jeans mass and radius for a molecular cloud at a temperature T = 10 K and number density n = 106 cm-3. Assume the mean particle mass is umH, where u = 2.8. Give your answers in solar masses and au, respectively. b Assuming the molecular gas follows the ideal gas law, calculate |dP/dr| = JAP/Ar| ~ Pe/RJ (units [N m-³]) at the beginning of the collapse, where P. is an approximate value for the central pressure of the cloud. Assume that P molecular cloud, and the mass and radius are the values determined above. 0 at the edge of the c Show that |dP/dr| is significantly smaller than GM,p/r². What can you interpret about the core's dynamics from this result?
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24 If the Temperature of the core of a supernova is 3200 x 1023 K, what should be the average translational kinetic energy of the particles moving inside this supernov (Boltzmann's constant = 1.38 x 10-23 J/K) Type your answer...