This topic contains a solution. Click here to go to the answer

Author Question: Conservation of angular momentum means that a spinning body tends to: A) fly apart. B) slow ... (Read 121 times)

burton19126

  • Hero Member
  • *****
  • Posts: 532
Conservation of angular momentum means that a spinning body tends to:
 
  A) fly apart.
  B) slow down.
  C) wobble into an eccentric orbit.
  D) gravitationally collapse.
  E) keep spinning.

Question 2

Describe some of the early theories for why the Sun shines and why they are no longer accepted as viable.
 
  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

itsakadoozi

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

E

Answer to Question 2

The Sun was once postulated to be a cooling ember, but that would have meant the Sun would have been much hotter in its immediate past (just a few hundred years ago) and people could not have lived in such a hot environment. Another idea was that the Sun shone through chemical burning (like a conventional fire on Earth), but this was dismissed because it could not generate and sustain sufficient brightness. A more modern hypothesis was that the Sun shone through the emission of thermal energy resulting from gravitational contraction, but this could only last for about 25 million years, far less than the age of Earth, before the Sun would have contracted to a point.



burton19126

  • Hero Member
  • *****
  • Posts: 532
Both answers were spot on, thank you once again



itsakadoozi

  • Sr. Member
  • ****
  • Posts: 317

 

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

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

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

For a complete list of videos, visit our video library