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

Author Question: What is meant by dark energy? A) the energy associated with dark matter through E=mc2 B) any ... (Read 49 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
What is meant by dark energy?
 
  A) the energy associated with dark matter through E=mc2
  B) any unknown force that opposes gravity
  C) the repulsive agent causing the universal expansion to accelerate
  D) highly energetic particles that are believed to constitute dark matter
  E) the total energy in the Universe after the Big Bang but before the first stars

Question 2

If you were to take a voyage across the Milky Way, what kind of material would you spend most of your time in?
 
  A) empty spacea pure vacuum
  B) dusty molecular clouds
  C) star clusters
  D) warm, rarefied clouds of atomic hydrogen
  E) cool, dense clouds of atomic hydrogen


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


nelaaney

  • Member
  • Posts: 560
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

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?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

A Dark Nebula A Dark Nebula
Energy of reactant molecules. Energy of reactant molecules.
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 ...
Energy flow and chemical cycling Energy flow and chemical cycling
The oceans have absorbed 90% of excess energy The oceans have absorbed 90% of excess energy
Activation Energy Activation Energy
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library