Author Question: In a closed universe a beam of light will: A) come back to where it originated. B) continue on ... (Read 44 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
In a closed universe a beam of light will:
 
  A) come back to where it originated.
  B) continue on forever.
  C) move on a circular path around its origin.
  D) reflect off the edge of the universe and come back.
  E) go on some strange path, never to return.

Question 2

The 21 cm line of hydrogen is strongly absorbed by interstellar dust.
 
  Indicate whether the statement is true or false



Juro

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

A

Answer to Question 2

FALSE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Juro

  • Sr. Member
  • ****
  • Posts: 337

 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

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.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

For a complete list of videos, visit our video library