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

Author Question: Via the rotation curve method, we can estimate the mass of galaxies like M31 from a. Doppler ... (Read 71 times)

aabwk4

  • Hero Member
  • *****
  • Posts: 593
on: Jul 27, 2018
Via the rotation curve method, we can estimate the mass of galaxies like M31 from
 
  a. Doppler shifts of material at the edge of its disk and computing P = 2r/v.
  b. the distances of the Doppler shift points from its center.
  c. Doppler shifts of material at the edge of its disk and computing P = 2r/v and the distances of the Doppler shift points from its center.
  d. It is impossible to estimate the mass of M31.

Question 2

A planetary nebula
 
  a. produces an absorption spectrum.
  b. produces an emission spectrum.
  c. is contracting to form planets.
  d. is contracting to form a star.
  e. is the result of carbon detonation in a 1- star.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sylvia

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

b


aabwk4

  • Member
  • Posts: 593
Reply 2 on: Jul 27, 2018
Excellent

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Rotation Rotation–Moving a body part around a central axis. Rotation Rotation–Moving a body part around a central axis.
The titration curve of the buffer acetic acid (CH3COOH) The titration curve of the buffer acetic acid (CH3COOH)
Pressure is a result of the atmosphere’s mass. Pressure is a result of the atmosphere’s mass.
Mass Wasting Forms Mass Wasting Forms
Delta Method Solution Delta Method Solution
A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ... A 23 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. ...
Video: Phases of an Action Potential - Resting Potential, Threshold, Rising, Falling, & Recovery Phases

For a complete list of videos, visit our video library