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

Author Question: Active galaxies are thought to have _______ in their centers. a. accretion disks b. massive ... (Read 165 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
Active galaxies are thought to have _______ in their centers.
 
  a. accretion disks
  b. massive black holes
  c. accretion disks and massive black holes
  d. the Local Group
  e. a cluster of galaxies

Question 2

For a star of Sun-like mass, what is the last stage of the nuclear fusion?
 
  a. Hydrogen to helium
  b. Helium to carbon and oxygen
  c. Carbon to magnesium
  d. Fusion goes all the way up to iron.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

b


Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 27, 2018
Thank you!


juwms

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

An Active Avalanche on Mars An Active Avalanche on Mars
Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
Centers for disease control and prevention guidelines Centers for disease control and prevention guidelines
Trans-Alaska Pipeline System (TAPS) Crosses the Active Strike-Slip Denali Fault Trans-Alaska Pipeline System (TAPS) Crosses the Active Strike-Slip Denali Fault
Active transport: Absorption Methods in the Small Intestine Active transport: Absorption Methods in the Small Intestine
Thought Suppression (3 of 4) Thought Suppression (3 of 4)
Video: Protein Structure - Primary, Secondary, Tertiary and Quaternary

For a complete list of videos, visit our video library