The flatness problem and the horizon problem can be explained by _______. a. the

Question

The flatness problem and the horizon problem can be explained by _______. a. the inflationary universe hypothesis b. non-baryonic matter c. the electroweak force d. grand unified theories e. dark energy The main criterion for deciding between Universe geometries is ______. a. age b. inflation C. mass d. density e. temperature The expansion of the Universe is accelerating. True False Einstein's mass-energy equivalence () is important to the first phases of the big bang in explaining how______. a. matter became more prevalent than antimatter b. stable protons and neutrons can exist below a certain temperature c. gamma ray photons create matter and antimatter d. the Universe expanded rapidly e. antimatter can exist

Explanation / Answer

ANSWER:

1) The flatness problem and horizon problem can be explained by the inflationary universe hypothesis

2) The main criterion for deciding between universe geometries is density

3) True, The expansion of the universe is accelerating

4) Einstein mass energy equivalence is important to the first phases of the big bang in explaining stable protons and neutrons can exist below a certain temperature

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