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 61 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 Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

The Hartlaub's Duck (Pteronetta hartlaubii) is a dark chestnut-coloured duck of African forests The Hartlaub's Duck (Pteronetta hartlaubii) is a dark chestnut-coloured duck of African forests
Water, Hydrogen, Methane Water, Hydrogen, Methane
Structural MRIs reveal cortical loss in adolescent patients with schizophrenia. Here dark blue ... Structural MRIs reveal cortical loss in adolescent patients with schizophrenia. Here dark blue ...
Hydrogen-bond donors and acceptors in water Hydrogen-bond donors and acceptors in water
Hydrogen bonding patterns for the a- and 310 helices Hydrogen bonding patterns for the a- and 310 helices
Hydrogen bond Hydrogen bond
Video: Net filtration pressure and lymph formation, edema & blood velocity

For a complete list of videos, visit our video library