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 28 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

tandmlomax84

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Bow shock formed by the magnetosphere of LL Orionis (center) as it collides with the Orion Nebula fl Bow shock formed by the magnetosphere of LL Orionis (center) as it collides with the Orion Nebula fl
Global view of Mars as seen by the Viking 1 orbiter in 1980, showing the Valles Marineris (center) Global view of Mars as seen by the Viking 1 orbiter in 1980, showing the Valles Marineris (center)
Lilly Martin Spencer’s Young Husband: First Marketing (1854). Note that passers-by are amused at thi Lilly Martin Spencer’s Young Husband: First Marketing (1854). Note that passers-by are amused at thi
Emission Trends Emission Trends
Renzo Piano, Jean-Marie Tjibaou Cultural Center, Nouméa, New Caledonia. 1991–98. Renzo Piano, Jean-Marie Tjibaou Cultural Center, Nouméa, New Caledonia. 1991–98.
What is the longest wavelength of light that can cause photoelectron emission fr What is the longest wavelength of light that can cause photoelectron emission fr
Video: Interview with Person who has Panic Attacks

For a complete list of videos, visit our video library