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

Author Question: What is the significance of the Tully-Fisher relation? ... (Read 93 times)

futuristic

  • Hero Member
  • *****
  • Posts: 638
on: Jul 28, 2018
What is the significance of the Tully-Fisher relation?

Question 2

What happens to the magnitude of the magnetic field inside a long solenoid if the radius is doubled?
  1.It becomes four times larger.
  2.It becomes twice as large.
  3.It is unchanged.
  4.It becomes one-half as large.
  5.It becomes one-fourth as large.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

britb2u

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 28, 2018
Answer to Question 1

The Tully-Fisher relation gives astronomers another direct measurement tool for
determining the absolute magnitude of a spiral galaxy using the width of H2 lines in
the light spectrum that is independent of the radial motion measurements made using
red-shifts.

Answer to Question 2

3


futuristic

  • Hero Member
  • *****
  • Posts: 638
Reply #2 on: Jul 28, 2018
TY


britb2u

  • Sr. Member
  • ****
  • Posts: 331
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

The male reproductive system, sagittal section showing the organs of the system and their relation t The male reproductive system, sagittal section showing the organs of the system and their relation t
The Mass-Luminosity Relation The Mass-Luminosity Relation
The Period-Luminosity Relation The Period-Luminosity Relation
Position of lung lobes in relation to anatomical landmarks Position of lung lobes in relation to anatomical landmarks
Relation between form, particular objects, and images in Plato’s Line. Relation between form, particular objects, and images in Plato’s Line.
Sociologists disagree about the relative significance of race and social class in determining social ... Sociologists disagree about the relative significance of race and social class in determining social ...
Video: Fermentation - When Oxygen Is Absent, Pyruvate to Lactate & Pyruvate to Ethanol

For a complete list of videos, visit our video library