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

Author Question: What causes X-ray bursters? A) The binary companion of a neutron star spirals in and combines ... (Read 145 times)

FButt

  • Hero Member
  • *****
  • Posts: 519
on: Jul 27, 2018
What causes X-ray bursters?
 
  A) The binary companion of a neutron star spirals in and combines with the neutron star.
  B) The mass of an accreting neutron star passes a critical threshold between 2 and 3 Msun and explodes.
  C) Helium fusion, which occurs when the thin layer of accreted material on a neutron star reaches 100 million K
  D) The rapid rotation of the neutron star causes it to fly apart.

Question 2

Objects in the Kuiper belt
 
  A) are in random orbits at all inclinations to the ecliptic.
  B) are the sources of long-period comets.
  C) lie beyond the orbit of Neptune, and close to the ecliptic.
  D) are dense, like the iron meteorites.
  E) lie beyond the orbit of Neptune and perpendicular to the ecliptic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gcook

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


FButt

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


gcook

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Division of mitochondria by binary fission Division of mitochondria by binary fission
Betelgeuse star (Hubble) Betelgeuse star (Hubble)
False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
Balmer Lines in the Spectrum of a Star Balmer Lines in the Spectrum of a Star
A star link-type network where all of the modules are connected together using splice packs. A star link-type network where all of the modules are connected together using splice packs.
Video: Neurosynapse Animation

For a complete list of videos, visit our video library