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

Author Question: Any main-sequence star over 25 solar masses will probably retain enough matter in its core after its ... (Read 19 times)

abc

  • Hero Member
  • *****
  • Posts: 543
Any main-sequence star over 25 solar masses will probably retain enough matter in its core after its supernova to make a black hole.
 
  Indicate whether the statement is true or false

Question 2

What is the best evidence for a supermassive black hole in the center of the Milky Way Galaxy?
 
  A) amazing filaments of radio emission swirling around the center of the galaxy
  B) the motions of stars around a mysterious dark object
  C) The existence of the Milky Way itself: The mass of the black hole is essential to gravitationally bind the galaxy together, so it doesn't fly apart.
  D) the gigantic bursts of X-ray energy from a mysterious dark object



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bfulkerson77

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

TRUE

Answer to Question 2

B





 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

For a complete list of videos, visit our video library