This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: I observe a galaxy that is 100 million light years away. Which of the following do I see? A) the ... (Read 86 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
on: Jul 27, 2018
I observe a galaxy that is 100 million light years away. Which of the following do I see?
 
  A) the light from the galaxy as it is today, and it is redshifted
  B) the light from the galaxy as it was 100 million years ago, and it is redshifted
  C) the light from the galaxy as it is today, and it is blueshifted
  D) the light from the galaxy as it was 100 million years ago, and it is blueshifted
  E) Nothing: the galaxy lies beyond the cosmological horizon.

Question 2

Nothing in the universe can travel faster than ________.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Smiles0805

  • Sr. Member
  • ****
  • Posts: 305
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

the speed of light


Capo

  • Member
  • Posts: 545
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

flexer1n1

  • Member
  • Posts: 373
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

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?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Which wavelengths of light are most effective at photosynthesis? Which wavelengths of light are most effective at photosynthesis?
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
Use the test light to check for voltage at terminal 30 of the relay. The ignition may have to be in ... Use the test light to check for voltage at terminal 30 of the relay. The ignition may have to be in ...
Apply effleurage over eyelids. Using very light pressure, stroke the closed eyelids with your thumbs ... Apply effleurage over eyelids. Using very light pressure, stroke the closed eyelids with your thumbs ...
Animated Light-independent reactions in CAM plants. Animated Light-independent reactions in CAM plants.
Heart drawing by 6 years old Heart drawing by 6 years old
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library