1. Assuming a spatially flat Universe, find the time dependence of: (a) the density of matter when the Universe is radiation dominated and (b) the density of radiation when the Universe is matter dominated.
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![1. Assuming a spatially flat Universe, find the time dependence of:
(a) the density of matter when the Universe is radiation dominated and
(b) the density of radiation when the Universe is matter dominated.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7f6fe9d5-2e20-4992-85ea-34219207756c%2Fb799c5fe-ad25-4ad5-b2db-6870c844d864%2F0r16kvq_processed.png&w=3840&q=75)
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