Course Hero Logo

Question 18 1 which of the four fundamental forces

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 5 - 10 out of 10 pages.

QUESTION 181.Which of the four fundamental forces holds the electrons in the atom?gravitationalforce
weak nuclearforceelectromagneticforcestrong nuclearforce2 pointsQUESTION 191.Immediately after the cosmological singularity, the four forces wereindistinguishable. Then they began to “branch off” and become separate.Which was the first of the four to branch off?
2 pointsQUESTION 201.What is the general meaning of the cosmological principle?
2 pointsQUESTION 21
1.The image above is a time lapsed image of stellar motion. Answer the following questions:North stars areprimarily in the
If we were looking ata planet in our nightsky, we would belooking at theStars featured in thisimage are primarilytheStars of the zodiacare primarily theB.Opposite direction of theimage2 pointsQUESTION 221.Match the following statements with the BEST answersA.B.A.B.
Thetemperature of theearlyuniversejust priorto therelease ofCMBradiationThetermperature todayof theCMBradiationThe eraor epochimmediatelyfollowingthe CMBRThe eraor epoch1.is/was similar to coolestplasma state ofhydrogen nearing 3000K2.is/was equal to 1000times expansion of theuniverse3.the Era of Atoms4.the Era of Nuclei5.the universe had abeginning6.is/was similar to theconditions in theradiation zone of theSun7.is/was only a few1000ths of a degreedifferent throughout theentire universe4.1.6.
immediatelyprecedingthe CMBRTheCMBR isthe bestevidenceThetemperature,density,andtrappedphotonsof theearlyuniverseThetemperaturevariationsin theCMBRThepredictionbyscientistsfor theBig Bang8.is/was based on theformation of neutralatoms of hydrogen2 pointsQUESTION 231.In which order did the fundamental forces of nature "freeze out" of theinitial phase of the Big Bang at the beginning of the universe?weak, strong,gravitygravity, weak,stronggravity, strong,weakstrong, gravity,weak3.7.8.2.5.
2 pointsQUESTION 24
1.Is the universe really expanding? If so, how do we describe theexpansion?
2 pointsQUESTION 251.How do we know that matter in the early universe was extremelysmooth (i.e., not really lumpy)?
End of preview. Want to read all 10 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
Kelley Davis
Tags

Newly uploaded documents

Show More

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture