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 115 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?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Desert shrubs create distinctive thermal microclimates in the desert landscape Desert shrubs create distinctive thermal microclimates in the desert landscape
Stars and the Interstellar Medium Stars and the Interstellar Medium
A Connection to Interstellar Space A Connection to Interstellar Space
Interstellar Reddening Interstellar Reddening
Rocking the leg to create rotation in the hip joint. Rocking the leg to create rotation in the hip joint.
Reengineering the Ti plasmid to create transgenic plants Reengineering the Ti plasmid to create transgenic plants
Video: Fermentation - When Oxygen Is Absent, Pyruvate to Lactate & Pyruvate to Ethanol

For a complete list of videos, visit our video library