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 42 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?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

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
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
Inverse Relation Between IQ and Disease. Could this explain the Flynn effect? Inverse Relation Between IQ and Disease. Could this explain the Flynn effect?
Relation between form, particular objects, and images in Plato’s Line. Relation between form, particular objects, and images in Plato’s Line.
How to find the maximum and minimum of a quadratic relation How to find the maximum and minimum of a quadratic relation
Video: Deglutition

For a complete list of videos, visit our video library