1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
horsena [70]
3 years ago
11

The actual matter density of the universe, accounting for all of the luminous matter and all of the dark matter known to exist i

n galaxies and clusters, is what fraction of the critical density?
Social Studies
1 answer:
goldfiish [28.3K]3 years ago
5 0

Answer:  The correct answer is :  The critical density for the universe is approximately 10 ^ -26 kg / m ^ 3 or you can also say 10 hydrogen atoms per cubic meter.

Explanation:  This value is given by:

critical density = 3H ^ 2/2 Pi G, where H is the Hubble constant and G is Newton's gravitational constant.

Critical density is the average density of matter necessary for the universe to stop its expansion but after an infinite time.

You might be interested in
Which of the following represents the best approach for a firm to take regarding ethics and social responsibility?a) The firm sh
Llana [10]

Answer: ITS EITHER D OR A

d) Spending a lot of money on a marketing campaign will fool people into thinking a firm is socially responsible.e) The firm should implement programs that are socially responsible and employees should act in an ethically responsible manner.

Explanation:

5 0
3 years ago
What recently happened in the automobile industry that exemplifies the idea that "we need to value more the creation of ideas in
Lyrx [107]
The answer to this question is <span>Tesla released all their patents to help the electric car industry .
By releasing the patent, now Tesla has opened up a chance for other experts to analyze Tesla's design and imporve the chance of new discovery for that certain product. This will definitely make a lot of potential improvements for electric cars in the future even though Tesla will not has the sole ownership of it.
</span>
4 0
3 years ago
Many small rural communities ___.
Andrei [34K]
It is definitely not true that many small rural communities have best transport, so we can reject the option b) and d) together with it.

The best answer is that they don't have mass transit systems (a is the correct answer). It's not true that they can walk everywhere because they can for example be forced to walk to a different town if they need a hospital.
7 0
4 years ago
Cialdini and his colleagues (1976) counted the number of college insignia t-shirts worn by university students on the monday aft
uysha [10]
I believe the answer is: <span>in-group identification is a source pride and self-esteem.

in-group identification would make most people develop the feeling of being accepted and acknowledge by other members of the group.
This would tend to increase their pride and self-esteem and make them able to develop a sense of belonging.</span>
6 0
3 years ago
What does the word psychology mean to you? What preconceived perceptions about the field of psychology do you bring with you to
Darya [45]

1- To me, psychology means the discipline that tries to explain human behavior and its complexities.

2- That is easy to major in psychology but one has to read a lot to do so. That being insightful is needed if you want to pursue a career in this field.

3- Not really. Usually, in Tv and movies psychologist are portraited as Psychoanalysts or therapists. In real life, the field of the psychologist is broader and not everything is about psychotherapy.

4- That is a magical solution, that the therapists only listen to your problems and they magically disappear, that is easy, that is magical, that hypnosis work 100% of the time. That "shrinks" are crazier than their patients, that having a mental illness means that you are an aggressive person, and so on. Media either glamorizes or stigmatizes the figure of the psychotherapist.

7 0
3 years ago
Other questions:
  • Before starting to write the speech, conner decided on a topic that he really like and he knew the audience would enjoy as well.
    12·2 answers
  • According to your textbook, students are more likely to get sick during final exams if they ____.
    13·1 answer
  • Which of the following fields in psychology focuses on higher mental processes, including thinking, memory, reasoning, problem-s
    8·1 answer
  • Which motivation theory might explain one’s need for financial security?
    9·1 answer
  • The scene from The Gold Rush analyzed in Chapter 2 creates the illusion that the space inside the cabin and the space outside th
    12·1 answer
  • Why did poor formers want to organize a new populist party ?
    7·1 answer
  • How did the building of the pyramids lead to advances in science and mathematics?
    14·1 answer
  • Your friend Ibram graduates at the end of the semester, but has yet to make a decision on their major. Ibram wants to be a teach
    5·1 answer
  • ‏Some states authorize a to make healthcare decisions ------- for patients who can't make them because they're incapacitated. O
    8·1 answer
  • james is interested in investigating how chemicals in the environment, mainly in the water or in the air, affect human body syst
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!