« previous next »

Author Question: In its most energetic phase, a quasar can probably only last A) a few days. B) a few years. C) ... (Read 30 times)

misspop

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
In its most energetic phase, a quasar can probably only last
 
  A) a few days.
  B) a few years.
  C) a few thousand years.
  D) a few million years.
  E) a few billion years.

Question 2

To get the space velocity of a star in three dimensions, you need its proper motion, distance, and radial velocity.
 
  Indicate whether the statement is true or false


Sarahjh

  • Sr. Member
  • ****
  • Posts: 370
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo
Stepwise approach for managing asthma in adults and patients 12 years and older. Stepwise approach for managing asthma in adults and patients 12 years and older.
Prevalence of drug use in the United States. Figures are based on a survey of people 12 years of age ... Prevalence of drug use in the United States. Figures are based on a survey of people 12 years of age ...
Acute Phase Proteins Acute Phase Proteins
How to plot a sine function containing an amplitude and phase shift (Question 1 of 3) How to plot a sine function containing an amplitude and phase shift (Question 1 of 3)
Literacy Development in the Early Years: Helping Children Read and Write Literacy Development in the Early Years: Helping Children Read and Write
Video: Bone Growth and Remodeling

For a complete list of videos, visit our video library