« previous next »

Author Question: Which of the following information is required to compute the mass of a galaxy using the rotation ... (Read 91 times)

BRWH

  • Hero Member
  • *****
  • Posts: 553
on: Jul 27, 2018
Which of the following information is required to compute the mass of a galaxy using the rotation curve method?
 
  A) The age of the galaxy
  B) The distance of the galaxy from the nearest rich galaxy cluster
  C) The total number of stars in the galaxy
  D) The true sizes of the orbits of stars or gas clouds within the galaxy

Question 2

The average separation between galaxies is about _____ times their diameter.
 
  A) 6
  B) 20
  C) 105
  D) 1017


nicoleclaire22

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

BRWH

  • Hero Member
  • *****
  • Posts: 553
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


nicoleclaire22

  • Sr. Member
  • ****
  • Posts: 318
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Forages, such as hay, are required by all horses Forages, such as hay, are required by all horses
Land mass looks like a synapse Land mass looks like a synapse
The Sun’s Rotation The Sun’s Rotation
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
The five skills of the element Collection of Information The five skills of the element Collection of Information
Use the information in the above table to establish a Born-Haber cycle to determine the ... Use the information in the above table to establish a Born-Haber cycle to determine the ...
Video: The 4 steps of translation Animation

For a complete list of videos, visit our video library