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

Author Question: Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at ... (Read 89 times)

Tirant22

  • Hero Member
  • *****
  • Posts: 532
on: Jul 27, 2018
Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shifted to 656.08 nm.
 
  How fast is the star moving (Note: The speed of light is approximately 300,000 km/s, or 3  105 km/s.)?
  A) about 10,000 km/s B) about 1,000 km/s
  C) about 1,000,000 km/s D) about 100 km/s

Question 2

The chromosphere is the layer of the Sun that we see as its visible surface.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

beccamahon

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

FALSE


Tirant22

  • Hero Member
  • *****
  • Posts: 532
Reply #2 on: Jul 27, 2018
Thanks


beccamahon

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jul 27, 2018
Welcome :)


« 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?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea. Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.
Fontanels and suture lines Fontanels and suture lines
Risk & Aseptic Processing - RABs Filling Line Risk & Aseptic Processing - RABs Filling Line
Hydrogen burns to produce energy and water Hydrogen burns to produce energy and water
Rainbow Spectrum Connection To The Cheops Pyramid Rainbow Spectrum Connection To The Cheops Pyramid
Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1 Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

For a complete list of videos, visit our video library