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

Author Question: Absolute visual magnitude is the: A) apparent magnitude of a star observed from Earth. B) ... (Read 178 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 27, 2018
Absolute visual magnitude is the:
 
  A) apparent magnitude of a star observed from Earth.
  B) luminosity of a star observed from a distance of 1000 pc.
  C) apparent magnitude of a star observed from a distance of 10 pc.
  D) luminosity of a star observed from Earth.

Question 2

Which of the following statements is true of the main sequence region of a Hertzsprung-Russell (H-R) diagram?
 
  A) It runs from the right edge of the diagram to the left edge.
  B) It includes only 10 percent of all normal stars.
  C) The hot main-sequence stars are more luminous than the cool main-sequence stars.
  D) The stars that are not on the main sequence have the same nuclear reactions as the main-sequence stars.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nathang24

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


washai

  • Hero Member
  • *****
  • Posts: 523
Reply #2 on: Jul 27, 2018
Thank you!


nathang24

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Steric relationship of the stereoisomers of alanine to the absolute configuration of L Steric relationship of the stereoisomers of alanine to the absolute configuration of L
El Anatsui, Between Earth and Heaven. El Anatsui, Between Earth and Heaven.
Benvenuto Cellini, Saltcellar: Neptune (Sea) and Tellus (Earth). Benvenuto Cellini, Saltcellar: Neptune (Sea) and Tellus (Earth).
Earth’s Oldest Preserved Rocks – 3.8 Billion Years Old, Greenland Earth’s Oldest Preserved Rocks – 3.8 Billion Years Old, Greenland
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
Find the magnitude and the direction of the resultant vector of the vectors below. Find the magnitude and the direction of the resultant vector of the vectors below.
Video: Phlebotomy

For a complete list of videos, visit our video library