This topic contains a solution. Click here to go to the answer

Author Question: The Andromeda spiral galaxy is almost edge-on to us. Astronomers have detected the orbital motion of ... (Read 69 times)

james0929

  • Hero Member
  • *****
  • Posts: 586
The Andromeda spiral galaxy is almost edge-on to us. Astronomers have detected the orbital motion of this and other such galaxies' disk material by
 
  a. using Hubble's law.
  b. measuring Doppler shifts of different parts of the disk.
  c. the steady state theory.
  d. measuring Doppler shifts of different parts of the disk.

Question 2

Stars that have ejected a planetary nebula eventually become
 
  a. protostars.
  b. brown dwarfs.
  c. white dwarfs.
  d. red giants.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SAUXC

  • Sr. Member
  • ****
  • Posts: 318
Answer to Question 1

d

Answer to Question 2

c




james0929

  • Member
  • Posts: 586
Reply 2 on: Jul 27, 2018
Wow, this really help


marict

  • Member
  • Posts: 304
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

For a complete list of videos, visit our video library