« previous next »

Author Question: Dark energy A) has mass. B) has never been directly observed in the laboratory. C) pushes on ... (Read 39 times)

Tirant22

  • Hero Member
  • *****
  • Posts: 532
on: Jul 29, 2018
Dark energy
 
  A) has mass.
  B) has never been directly observed in the laboratory.
  C) pushes on space.
  D) All of the above.
  E) None of the above.

Question 2

Oxygen condenses into a liquid at approximately 90 K. What temperature, in degrees Fahrenheit, does this correspond to?
 
  A) -193F
  B) -217F
  C) -265F
  D) -297F


CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Location of the Sinuses (Sphenoid Sinuses are Directly Behind Ethmoid Sinuses) Location of the Sinuses (Sphenoid Sinuses are Directly Behind Ethmoid Sinuses)
Energy passes among trophic levels Energy passes among trophic levels
The Three Components of Energy Needs The Three Components of Energy Needs
An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i
how much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C? how much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C?
Comparing uncontrolled and controlled energy release. Comparing uncontrolled and controlled energy release.
Video: Hemoglobin's affinity with oxygen - carbon dioxide, temperature and bisphosphoglycerate (BPG)

For a complete list of videos, visit our video library