« 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 44 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?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for
Variety in Spiral Arms Variety in Spiral Arms
New Yorkers flee from the dust caused by the collapse of the twin towers of the World Trade Center f New Yorkers flee from the dust caused by the collapse of the twin towers of the World Trade Center f
Robert Smithson, Spiral Jetty. Robert Smithson, Spiral Jetty.
Video: Griffith's experiments

For a complete list of videos, visit our video library