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

Author Question: Recent high resolution radio observations show that quasars can be classified as a. exploding ... (Read 40 times)

genevieve1028

  • Hero Member
  • *****
  • Posts: 601
on: Jul 27, 2018
Recent high resolution radio observations show that quasars can be classified as
 
  a. exploding supernova stars.
  b. exploding planets.
  c. normal galaxies like our Milky Way Galaxy.
  d. a kind of active galaxy similar to Seyfert and radio galaxies.

Question 2

A planetary nebula has a radius of 0.5 pc and is expanding at 20 km/s. What is the approximate age of this planetary nebula? (1 pc is equal to 31013 km and 1 year is equal to 3.15107 seconds.)
 
  a. 240 years
  b. 790,000 years
  c. 96,000 years
  d. 960 years
  e. 24,000 years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ju

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 27, 2018
Answer to Question 1

d

Answer to Question 2

e
RATIONALE: age = radius/speed. Convert from seconds to years.


genevieve1028

  • Member
  • Posts: 601
Reply 2 on: Jul 27, 2018
Excellent

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

A microsatellite locus can show linkage to a disease gene A microsatellite locus can show linkage to a disease gene
Radio Views of Saturn Radio Views of Saturn
Radio Radio
Overview of a computer-controlled high-pressure common rail V-8 diesel engine. Overview of a computer-controlled high-pressure common rail V-8 diesel engine.
The high-voltage disconnect switch is in the trunk area on a Toyota Prius. High-voltage lineman’s ... The high-voltage disconnect switch is in the trunk area on a Toyota Prius. High-voltage lineman’s ...
Mendel’s Observations for Seven Monohybrid Traits in the F1 and F2 Generations Mendel’s Observations for Seven Monohybrid Traits in the F1 and F2 Generations
Video: Glycolysis Animation

For a complete list of videos, visit our video library