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 85 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?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Position of lung lobes in relation to anatomical landmarks Position of lung lobes in relation to anatomical landmarks
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 relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ... The relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ...
The relation between drug tolerance and withdrawal effects. The same adaptive neurophysiological ... The relation between drug tolerance and withdrawal effects. The same adaptive neurophysiological ...
Posterior view of midbrain in relation to brain stem Posterior view of midbrain in relation to brain stem
Posterior view of midbrain in relation to brain stem Posterior view of midbrain in relation to brain stem
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

For a complete list of videos, visit our video library