This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Supermassive black holes erupt in ____. a. any type of galaxy, and at random times b. elliptical ... (Read 52 times)

lilldybug07

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
Supermassive black holes erupt in ____.
 
  a. any type of galaxy, and at random times
 b. elliptical galaxies only, when the last of their gas and dust is consumed
  c. galaxies that have been part of a collision or merger
 d. spiral galaxies only, during a burst of star formation
 e. irregular galaxies

Question 2

Absorption lines are produced by ____.
 
  a. atoms that become ionized
 b. electrons that transfer from a high energy level to a low energy level
  c. electrons that transfer from a low energy level to a high energy level
  d. the intensity of agitation of atoms in a hot gas
 e. the motion of an object toward or away from the observer


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Dunkey

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

c


lilldybug07

  • Member
  • Posts: 546
Reply 2 on: Jul 27, 2018
Excellent

pratush dev

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Black Spartan Black Spartan
Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp
A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter. A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter.
Most conventional zirconia oxygen sensors and some wide-band oxygen sensors use the cup-type ... Most conventional zirconia oxygen sensors and some wide-band oxygen sensors use the cup-type ...
Noid lights are usually purchased as an assortment so that one is available for any type or size ... Noid lights are usually purchased as an assortment so that one is available for any type or size ...
A severe case of delayed contact dermatitis (Type IV hypersensitivity) from wearing latex gloves. A severe case of delayed contact dermatitis (Type IV hypersensitivity) from wearing latex gloves.
Video: Proteins Defined, Hierarchy & Composition of Cells

For a complete list of videos, visit our video library