« 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 31 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?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Medication errors are three times higher among children and infants than with adults.

H. erectus migrated out of Africa beginning about 1.8 million years ago and is first known from Geor H. erectus migrated out of Africa beginning about 1.8 million years ago and is first known from Geor
The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay? How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay?
How to plot a sine function containing an amplitude and phase-shift (Question 2 of 3) How to plot a sine function containing an amplitude and phase-shift (Question 2 of 3)
Hives is a general contraindication in the acute phase and a local contraindication in the subacute ... Hives is a general contraindication in the acute phase and a local contraindication in the subacute ...
How to find the phase shift from a graph? How to find the phase shift from a graph?
Video: Causes of Acne

For a complete list of videos, visit our video library