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

Author Question: Which statement about the dark nebulae is true? A) Hydrogen and helium are the chief absorbing ... (Read 58 times)

asmith134

  • Hero Member
  • *****
  • Posts: 576
on: Jul 27, 2018
Which statement about the dark nebulae is true?
 
  A) Hydrogen and helium are the chief absorbing and scattering agents.
  B) They block the vast majority of radio waves from our Galaxy.
  C) They can be penetrated only with longer wavelengths such as radio and infrared.
  D) They comprise the majority of the mass of the Galaxy.
  E) They can be penetrated only with shorter waves, such as UV and X-ray.

Question 2

Which of the following planets cannot be seen with the naked eye?
 
  A) Venus
  B) Mars
  C) Jupiter
  D) Saturn
  E) Neptune


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carojassy25

  • Sr. Member
  • ****
  • Posts: 299
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

E


asmith134

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 27, 2018
TY


carojassy25

  • Sr. Member
  • ****
  • Posts: 299
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

The Tasmanian devil's whiskers help them to locate prey in the dark. The Tasmanian devil's whiskers help them to locate prey in the dark.
Common hydrogen bonds in biological systems Common hydrogen bonds in biological systems
"Dark Matter" "Dark Matter"
Hydrogen bond Hydrogen bond
Example of Reconciling a Bank Statement Cont. Example of Reconciling a Bank Statement Cont.
Antigen (dark green and orange) and antibody (blue and green) binding forming a complex. Antigen (dark green and orange) and antibody (blue and green) binding forming a complex.
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

For a complete list of videos, visit our video library