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

Author Question: The relation between the Doppler shift of galaxies and their distances is called A) the ... (Read 48 times)

crazycityslicker

  • Hero Member
  • *****
  • Posts: 537
The relation between the Doppler shift of galaxies and their distances is called
 
  A) the cosmological principle.
  B) Hubble's law.
  C) special relativity.
  D) Olbers's paradox.
  E) general gelativity.

Question 2

What special type of information is yielded only by eclipsing binary stars?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

catron30

  • Sr. Member
  • ****
  • Posts: 297
Answer to Question 1

B

Answer to Question 2

The analysis of the light curve of eclipsing binaries allows us to measure their sizes. As most are spectroscopic binaries as well, we can use their speeds and durations of various stages of the eclipse to directly measure their diameters. Basically, the longer the eclipse takes, the bigger the star is.




crazycityslicker

  • Member
  • Posts: 537
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it


ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

For a complete list of videos, visit our video library