« previous next »

Author Question: Which of the following can't be associated with the spiral arms of a galaxy? a. dust and gas b. ... (Read 23 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
Which of the following can't be associated with the spiral arms of a galaxy?
 
  a. dust and gas
  b. metal-poor stars
  c. young, massive stars
  d. star formation

Question 2

The lower edge of the main-sequence band is known as ________ and represents the location in the H-R diagram at which stars begin their lives as main-sequence stars.
 
  a. the Coulomb barrier
  b. hydrostatic equilibrium
  c. the birth line
  d. the zero-age main sequence
  e. the evolutionary track


tanna.moeller

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Coat of Arms of Sauerlach, Germany Coat of Arms of Sauerlach, Germany
Gold dust day gecko (also known as Madagascar day geckos) Gold dust day gecko (also known as Madagascar day geckos)
Dust Mite Dust Mite
The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ... The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ...
Dust storms Dust storms
A giant dust cloud about to descend on a farm in Kansas during the 1930s A giant dust cloud about to descend on a farm in Kansas during the 1930s
Video: Regulation of GFR: autoregulation via myogenic mechanism Myogenic mechanism

For a complete list of videos, visit our video library