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 100 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
Gracias!

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

The activation energy barrier. The activation energy barrier.
Nuclear energy Nuclear energy
The energy budget The energy budget
Rapid growth in the use of alternative energy seems impressive Rapid growth in the use of alternative energy seems impressive
Physics: Power, Energy and Time Physics: Power, Energy and Time
chemistry homework help energy related chemistry homework help energy related
Video: Embryonic development - Week 4

For a complete list of videos, visit our video library