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

Author Question: How can the image of a single quasar be doubled? What does that tell us about the quasar's distance? ... (Read 58 times)

oliviahorn72

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
How can the image of a single quasar be doubled? What does that tell us about the quasar's distance?
 
  What will be an ideal response?

Question 2

One of the effects of Mercury's very slow spin is
 
  A) tectonic activity.
  B) large variations in the size of its polar cap.
  C) an intensely powerful magnetic field.
  D) wind patterns that are slow, but global in size.
  E) extreme variations in its surface temperature.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 27, 2018
Answer to Question 1

If the gravity of a massive foreground galaxy bends the quasar's light, it can create multiple images. The quasar must be behind and at a much great distance from us than the lensing galaxy.

Answer to Question 2

E


oliviahorn72

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

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

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Using Parallax to Determine Distance Using Parallax to Determine Distance
Disposable, single use thermometer strip Disposable, single use thermometer strip
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
How to find the distance of any line segment How to find the distance of any line segment
Poor single parents and their children Poor single parents and their children
Multiple origins of replication on a single chromosome from Drosophila melanogaster Multiple origins of replication on a single chromosome from Drosophila melanogaster
Video: PET Scan Animation

For a complete list of videos, visit our video library