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

Author Question: What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy? ... (Read 52 times)

kwoodring

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy?
 
  a. Normal spiral galaxies usually have shorter spiral arms.
  b. Normal spiral galaxies never contain a supermassive black hole at their center.
  c. The central region of a Seyfert galaxy is much brighter.
  d. Seyfert galaxies don't contain any star formation.

Question 2

A type II supernova
 
  a. occurs when a white dwarf's mass exceeds the Chandrasekhar limit.
  b. is the result of helium flash.
  c. is characterized by a spectrum that shows hydrogen lines.
  d. occurs when the iron core of a massive star collapses.
  e. is characterized by a spectrum that shows hydrogen lines and occurs when the iron core of a massive star collapses.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jessofishing

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

e


kwoodring

  • Member
  • Posts: 560
Reply 2 on: Jul 27, 2018
Gracias!

Sarahjh

  • Member
  • Posts: 370
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Sickled and normal red blood cells Sickled and normal red blood cells
Organ systems of the body with major functions. Organ systems of the body with major functions.
Probability of Major Depression as a Function of 5-HTT Allele and Levels of Maltreatment ... Probability of Major Depression as a Function of 5-HTT Allele and Levels of Maltreatment ...
Normal combustion is a smooth, controlled burning of the air–fuel mixture. Normal combustion is a smooth, controlled burning of the air–fuel mixture.
Outline of pathways for glucose synthesis from the major gluconeogenic precursors Outline of pathways for glucose synthesis from the major gluconeogenic precursors
Bach, Minuet in G major, BWV Anh 114, Piano Bach, Minuet in G major, BWV Anh 114, Piano
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library