This topic contains a solution. Click here to go to the answer

Author Question: Which of the following is the centerpiece in the unified model of active galactic nuclei (AGN) and ... (Read 54 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
Which of the following is the centerpiece in the unified model of active galactic nuclei (AGN) and quasars?
 
  A) A blue giant
  B) An accretion disk
  C) A torus
  D) A black hole

Question 2

The _____ is a measure of the rate of expansion of the Universe.
 
  A) Hubble constant
  B) Stefan-Boltzmann constant
  C) Boltzmann constant
  D) Planck constant



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kingfahad97

  • Sr. Member
  • ****
  • Posts: 308
Answer to Question 1

D

Answer to Question 2

A




ts19998

  • Member
  • Posts: 531
Reply 2 on: Jul 27, 2018
Gracias!


Liamb2179

  • Member
  • Posts: 365
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

For a complete list of videos, visit our video library