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

Author Question: A Kuiper Belt object was discovered that may be larger than Pluto. Indicate whether the statement ... (Read 89 times)

hubes95

  • Hero Member
  • *****
  • Posts: 561
A Kuiper Belt object was discovered that may be larger than Pluto.
 
  Indicate whether the statement is true or false

Question 2

How are rotation curves of spiral galaxies determined for distances beyond where starlight can be detected?
 
  A) by measuring the broadening of the galaxy's absorption lines
  B) by extrapolation of the measured rotation curve
  C) by observations of spectral lines emitted by dark matter
  D) by watching the galaxies rotate over a period of decades
  E) by observations of the 21 cm line of atomic hydrogen



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wilsonbho

  • Sr. Member
  • ****
  • Posts: 322
Answer to Question 1

TRUE

Answer to Question 2

E





 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

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

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

For a complete list of videos, visit our video library