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

Author Question: What role does helium play in spectral classification? What will be an ideal ... (Read 19 times)

student77

  • Hero Member
  • *****
  • Posts: 567
on: Jul 27, 2018
What role does helium play in spectral classification?
 
  What will be an ideal response?

Question 2

A quasar's spectrum is hugely redshifted. What does this large redshift tells us about the quasar?
 
  A) the composition of the quasar
  B) the size of the quasar's central, supermassive black hole
  C) the distance to the quasar
  D) the type of host galaxy in which the quasar resides


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

JaynaD87

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 27, 2018
Answer to Question 1

It is ionized in the hottest O class stars, and prominent but neutral in B class stars; in cooler stars, it is not noted.

Answer to Question 2

C


student77

  • Member
  • Posts: 567
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

xiaomengxian

  • Member
  • Posts: 311
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Everyone has one nostril that is larger than the other.

Sharing patient information with colleagues is an important nursing role Sharing patient information with colleagues is an important nursing role
The three stages we go through to develop the ability of taking the role of the other. The three stages we go through to develop the ability of taking the role of the other.
Drugs Commonly Prescribed According to Classification Drugs Commonly Prescribed According to Classification
Basic classification of streptococci-based on hemolysis. Basic classification of streptococci-based on hemolysis.
Role of Factors of Production in Determining Growth, 1975–2009 Role of Factors of Production in Determining Growth, 1975–2009
Gender and Play in Children (2 of 2) Gender and Play in Children (2 of 2)
Video: Appendicitis Animation

For a complete list of videos, visit our video library