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

Author Question: The relation between the Doppler shift of galaxies and their distances is called A) the ... (Read 75 times)

crazycityslicker

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
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
Gracias!

chereeb

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Relation between form, particular objects, and images in Plato’s Line. Relation between form, particular objects, and images in Plato’s Line.
Doppler Effect, Observer Moving Doppler Effect, Observer Moving
How to plot a sine function containing an amplitude and phase shift (Question 1 of 3) How to plot a sine function containing an amplitude and phase shift (Question 1 of 3)
Galaxies Galaxies
Video: Brief Summary on Photosynthesis - Animation

For a complete list of videos, visit our video library