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

Author Question: CO observations of the galaxy reveal a. the location of dense neutral hydrogen clouds. b. the ... (Read 68 times)

tnt_battle

  • Hero Member
  • *****
  • Posts: 556
on: Jul 27, 2018
CO observations of the galaxy reveal
 
  a. the location of dense neutral hydrogen clouds.
  b. the location of population II stars.
  c. the location of population I stars.
  d. the location of the galactic corona.
  e. the location of giant molecular clouds.

Question 2

If a star's spectrum does not contain spectral lines characteristic of a certain element, can we conclude that the star does not contain that element? Why or why not?
 
  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

guyanai

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

We cannot conclude this, because it might be that the star is too hot or too cool for the electrons in a particular element to absorb photons.


tnt_battle

  • Hero Member
  • *****
  • Posts: 556
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


guyanai

  • Sr. Member
  • ****
  • Posts: 349
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Hydrogen Atom Hydrogen Atom
McBurney’s point is the common location of pain in children and adolescents with appendicitis. McBurney’s point is the common location of pain in children and adolescents with appendicitis.
Bohr Model of Hydrogen Atom Bohr Model of Hydrogen Atom
hydrogen hydrogen
Growth in Cold and Cool Clouds Growth in Cold and Cool Clouds
A genetic map showing the location of revertible (point) mutants of the rll region A genetic map showing the location of revertible (point) mutants of the rll region
Video: System organization - PPM system types (Somatic, Autonomic & Enteric) and Reflex arc types

For a complete list of videos, visit our video library