« previous next »

Author Question: In a uniformly expanding universe, which statement best describes the situation as viewed from an ... (Read 65 times)

abarnes

  • Hero Member
  • *****
  • Posts: 556
on: Jul 27, 2018
In a uniformly expanding universe, which statement best describes the situation as viewed from an observer in Galaxy C (not the Milky Way Galaxy)?
 
  A) Galaxy C observer sees some galaxies moving away, some moving towards itself.
  B) Galaxy C observer sees all galaxies moving away from the Milky Way Galaxy.
  C) Galaxy C observer sees all other galaxies moving away from itself.

Question 2

If we know the average separation and period of revolution for a binary system, we can then measure
 
  A) the actual luminosity of each star.
  B) the actual mass of both individual stars.
  C) their absolute magnitudes.
  D) the actual sizes of the two stars.
  E) the total mass of the system.


katkat_flores

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

E


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

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.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Older adults may grieve intensely over the loss of a person or situation that has been a part of the Older adults may grieve intensely over the loss of a person or situation that has been a part of the
The Scales of the Universe The Scales of the Universe
The strange situation. The Strange Situation features a series of episodes in which (a) the mother l The strange situation. The Strange Situation features a series of episodes in which (a) the mother l
Example of Reconciling a Bank Statement Cont. Example of Reconciling a Bank Statement Cont.
Time Line for Evolution of the Universe Time Line for Evolution of the Universe
When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ... When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ...
Video: Glycolysis - Introduction to ATP and the burning of sugar

For a complete list of videos, visit our video library