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

Author Question: What is Sgr A? A) a source of bright radio emission in the center of our galaxy B) a source of ... (Read 92 times)

tth

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
What is Sgr A?
 
  A) a source of bright radio emission in the center of our galaxy
  B) a source of bright ultraviolet light near the center of our galaxy
  C) the brightest star in the constellation Sagittarius
  D) the bulge at the center of our galaxy
  E) a source of bright X-ray emission coming from the entire constellation of Sagittarius

Question 2

Relate a nova and a Type I supernova.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ong527

  • Sr. Member
  • ****
  • Posts: 285
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

Both are the result of a binary system consisting of a white dwarf and a stellar companion. If less than 1.4 solar masses, the white dwarf will blow off a shell of accreted matter in a nova explosion. But if enough mass is added to the white dwarf to push it over Chandrasekhar's limit, it will explode as a Type I supernova.


tth

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

atrochim

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Selection of a nursing center Selection of a nursing center
Raymond Pettibon, No Title (The bright flatness). Raymond Pettibon, No Title (The bright flatness).
The chart under the cover for the relay center indicates the location of the relay that controls ... The chart under the cover for the relay center indicates the location of the relay that controls ...
Selective breeding of maze-bright and maze-dull strains of rats by Tryon (1934). (Data from Cooper, ... Selective breeding of maze-bright and maze-dull strains of rats by Tryon (1934). (Data from Cooper, ...
Emission Spectrum Emission Spectrum
Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ... Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ...
Video: Gastrin (protein digestion)

For a complete list of videos, visit our video library