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 45 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
Excellent

milbourne11

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

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

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Pap smear. Cells of the cervix (shown in the center) change in appearance as they progress through Pap smear. Cells of the cervix (shown in the center) change in appearance as they progress through
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme
Looking carefully at the scan tool data is very helpful in locating the source of a problem. Looking carefully at the scan tool data is very helpful in locating the source of a problem.
The receptive fields of an on-center cell and an off-center cell. The receptive fields of an on-center cell and an off-center cell.
Video: Flexor reflex & Crossed extensor reflex

For a complete list of videos, visit our video library