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 69 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?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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?
The hypothalamus and pituitary glands and their relation to the brain. The hypothalamus and pituitary glands and their relation to the brain.
The human hypothalamus (in color) in relation to the optic chiasm and the pituitary gland. The human hypothalamus (in color) in relation to the optic chiasm and the pituitary gland.
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: Glomerular filtrate rate: pressures that affect GFR, NFP & GFR and blood composition

For a complete list of videos, visit our video library