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Name the rapidly rotating disk at the center of the

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9.Name the rapidly rotating disk at the center of the galaxy spinning around the black hole.A.Acceleration disk.B.Galactic circular storm.C.Compaction zone.D.Convection cell.E.Accretion disk.
Points Earned:1/1Correct Answer:Your Response:10.Where do we observe black holes?
Points Earned:1/1Correct Answer:Your Response:11.What is the mass of the supermassive black hole in the center of the Andromedagalaxy?
Points Earned:1/1Correct Answer:
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Chapter 29 / Exercise 10
College Physics
Serway/Vuille
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Your Response:12.Which of the following areas have the most massive black holes (those with thehighest masses)?
Points Earned:1/1Correct Answer:Your Response:13.How do astronomers measure the mass of a supermassive black hole?A.by comparing its apparent magnitude to its absolute brightnessB.using the formula E = mc2C.by measuring its parallaxD.by comparing its X-ray luminosity to its radio luminosityE.by measuring the speed at which stars move in its vicinity
Points Earned:1/1Correct Answer:Your Response:14.Which of the following are flavors of quarks?
Points Earned:1/1Correct Answer:Your Response:15.The universe formed Helium nuclei in a process called nucleosynthesis. At that time,what fraction of the mass was converted to Helium nuclei (2 protons and 2 neutrons)?
Points Earned:1/1
Correct Answer:Your Response:16.What is exchanged between different particles in order to make the forces work?
Points Earned:1/1Correct Answer:Your Response:17.Which is a reason that we know dark energy is a major component of the universe?A.Supernovae would not occur without dark energy.B.Dark energy is needed in order that light can escape from supermassive blackholes.C.The universe is flat and regular matter doesn't contribute enough energy density.D.The gravity due to regular matter in the universe would have started it contractingagain by now without dark energy.E.The universe would not be 2.7 degrees Kelvin today without dark energy.
Points Earned:1/1Correct Answer:Your Response:

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Term
Spring
Professor
MILLER,DAVIDEMAN
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We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
College Physics
The document you are viewing contains questions related to this textbook.
Chapter 29 / Exercise 10
College Physics
Serway/Vuille
Expert Verified

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