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

Author Question: What is the force that keeps a main sequence star from blowing apart? A) magnetism B) ... (Read 47 times)

Haya94

  • Hero Member
  • *****
  • Posts: 558
on: Jul 27, 2018
What is the force that keeps a main sequence star from blowing apart?
 
  A) magnetism
  B) gravitation
  C) the strong force
  D) radiation pressure
  E) electron degeneration pressure

Question 2

Define absorption and emission lines.
 
  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

coyin

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

Absorption: When light from a continuous source, such as the dense photosphere of a star, is passed though a thin, cool gas, certain energies from the continuum are absorbed, depending on which elements are present, creating a pattern of dark lines which identify the elements and molecules present in the cool gas cloud. Emission: A hot, thin gas cools off by emitting photons, but only at discrete wavelengths determined by the electron transitions downward of the component atoms. These appear as a pattern of bright emission lines.


Haya94

  • Member
  • Posts: 558
Reply 2 on: Jul 27, 2018
Excellent

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

The Structure of an Old High-Mass Star The Structure of an Old High-Mass Star
Muscle length versus isometric force Muscle length versus isometric force
Targeting female fetuses for abortion has become a main issue of the emerging feminist movement in ... Targeting female fetuses for abortion has become a main issue of the emerging feminist movement in ...
Common sequence features in integrated retroviruses and other eukaryotic transposable elements Common sequence features in integrated retroviruses and other eukaryotic transposable elements
finding the resultant force finding the resultant force
finding the resultant force finding the resultant force
Video: Medullary osmotic gradient - influencing factors

For a complete list of videos, visit our video library