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 23 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
Thanks for the timely response, appreciate it

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Vision with macular degeneration is experienced with an inability to focus in the center of the visu Vision with macular degeneration is experienced with an inability to focus in the center of the visu
Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o
The Kaaba, center of the Haram Mosque, Mecca, Saudi Arabia. The Kaaba, center of the Haram Mosque, Mecca, Saudi Arabia.
#38.Genetically identical organisms derived from a single genetic source are #39 #38.Genetically identical organisms derived from a single genetic source are #39
Barred Spiral Galaxy Barred Spiral Galaxy
A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ... A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ...
Video: Vasectomy

For a complete list of videos, visit our video library