Author Question: In any particular place on Earth, certain constellations are visible in the evening only at certain ... (Read 43 times)

SO00

  • Hero Member
  • *****
  • Posts: 568
In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because ________.
 
  A) our evening view of space depends on where Earth is located in its orbit around the Sun
  B) some constellations are circumpolar
  C) on any particular night, we can only see stars that are directly opposite (180 degrees away from) the Sun in the sky
  D) during some times of year, some constellations drop below the southern horizon

Question 2

The maximum mass of a white dwarf is ________.
 
  A) limitless; there is no theoretical limit to the maximum mass of a white dwarf
  B) about the mass of our Sun
  C) about 1.4 times the mass of our Sun
  D) about 3 times the mass of our Sun



dajones82

  • Sr. Member
  • ****
  • Posts: 359
Answer to Question 1

A

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

For a complete list of videos, visit our video library