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

Author Question: Spectral lines from Galaxy B are redshifted from their rest wavelengths twice as much as the ... (Read 100 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


casperchen82

  • Member
  • Posts: 540
Reply 2 on: Jul 27, 2018
Excellent

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

The elliptical galaxy Centaurus A at visible, far-infrared and x-ray wavelengths. The elliptical galaxy Centaurus A at visible, far-infrared and x-ray wavelengths.
Object and Word Recognition After Midsegments of Lines Have Been Eliminated Object and Word Recognition After Midsegments of Lines Have Been Eliminated
This chart shows the various lines of responsibility and how they differ in presidential and parliam This chart shows the various lines of responsibility and how they differ in presidential and parliam
Sen lines in traditional Thai massage. Sen lines in traditional Thai massage.
Opener Spectral karyotyping of human chromosomes Opener Spectral karyotyping of human chromosomes
Offset Method Plot of Land with Offset Lines Offset Method Plot of Land with Offset Lines
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library