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 46 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
Excellent

apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Grime's classification of plant life-history strategies Grime's classification of plant life-history strategies
The Role of Microfilaments in Cell Movement-Showing Cause and Effect in Biology 2 The Role of Microfilaments in Cell Movement-Showing Cause and Effect in Biology 2
Role of Monoamine Oxidase Role of Monoamine Oxidase
The Role of Parkin in Parkinson’s Disease The Role of Parkin in Parkinson’s Disease
Classification of Antihypertensive Agents Classification of Antihypertensive Agents
Taxonomic Classification Taxonomic Classification
Video: Introduction to Photolithography - WC, BLF, PA, Hard and Soft baking

For a complete list of videos, visit our video library