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 88 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?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

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?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Jugular Venous Pulse Waves in Relation to the Phonocardiogram and Electrocardiogram Jugular Venous Pulse Waves in Relation to the Phonocardiogram and Electrocardiogram
Relation between form, particular objects, and images in Plato’s Line. Relation between form, particular objects, and images in Plato’s Line.
Items that would be difficult to replace bearing legal significance are sent by certified mail. Items that would be difficult to replace bearing legal significance are sent by certified mail.
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 ...
The course of EEG stages during a typical night’s sleep and the relation of emergent stage 1 EEG ... The course of EEG stages during a typical night’s sleep and the relation of emergent stage 1 EEG ...
Posterior view of midbrain in relation to brain stem Posterior view of midbrain in relation to brain stem
Video: Second Messengers in the Inositol-lipid Signaling Pathway

For a complete list of videos, visit our video library