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

Author Question: Spectral lines from Galaxy B are redshifted from their rest wavelengths twice as much as the ... (Read 105 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
Spectral lines from Galaxy B are redshifted from their rest wavelengths twice as much as the spectral lines from Galaxy A. According to Hubble's law, what can you say about their approximate relative distances?
 
  A) Galaxy A is twice as far as Galaxy B.
  B) Galaxy B is four times as far as Galaxy A.
  C) Galaxy A is four times as far as Galaxy B.
  D) Galaxy B is twice as far as Galaxy A.
  E) Not enough information to sayyou need to know Hubble's constant to answer this question.

Question 2

Which of the following is considered by biologists to be a likely place where life first arose on Earth?
 
  A) on meteorites that landed on Earth
  B) on land surfaces that got moderately heavy rainfall
  C) in hot water near undersea volcanoes
  D) deep underground



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

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

D

Answer to Question 2

C




casperchen82

  • Member
  • Posts: 540
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review


aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

For a complete list of videos, visit our video library