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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.

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1 year ago
Help please due today <br><br> Impacts of the treaty: Explain the territory changes for Spain.
Lelu [443]

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2 years ago
James olds and peter milner (1954) were trying to implant an electrode in a rat's reticular formation when they mistakenly place
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3 years ago
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NemiM [27]

Answer:

Check your room one more time, Alton, in case that is where you left your phone.

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3 years ago
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