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

Author Question: What two things are needed to create an emission nebulae? A) interstellar gas and dust B) ... (Read 63 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Jul 27, 2018
What two things are needed to create an emission nebulae?
 
  A) interstellar gas and dust
  B) hydrogen fusion and helium ionization
  C) cool stars and much interstellar dust
  D) hot stars and interstellar gas, particularly hydrogen
  E) hydrogen gas and carbon dust

Question 2

At which wavelength range is there no current or planned space observatory?
 
  A) radio
  B) infrared
  C) visible
  D) X-ray
  E) gamma-ray


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

olivia_paige29

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


jazziefee

  • Hero Member
  • *****
  • Posts: 505
Reply #2 on: Jul 27, 2018
TY


olivia_paige29

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

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

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Modifications to eukaryotic pre-mRNA are needed to create a functional (mature) mRNA molecule Modifications to eukaryotic pre-mRNA are needed to create a functional (mature) mRNA molecule
Dreams Disappeared in a Cloud of Dust Dreams Disappeared in a Cloud of Dust
Interstellar Reddening Interstellar Reddening
Pollutants emission Pollutants emission
Create a map that integrates the following terms: alternative splicing, constitu Create a map that integrates the following terms: alternative splicing, constitu
Living and non living things Living and non living things
Video: What is Reverse Osmosis?

For a complete list of videos, visit our video library