3. Suppose the scale factor varies as a(t) = Act, where A and a are constants. (a) Can the constant A be negative? Explain your answer. (b) Find the Hubble parameter II (0) (c) If the universe is expanding, what is the condition on a? (d) What is the condition on a for accelerated expansion?
3. Suppose the scale factor varies as a(t) = Act, where A and a are constants. (a) Can the constant A be negative? Explain your answer. (b) Find the Hubble parameter II (0) (c) If the universe is expanding, what is the condition on a? (d) What is the condition on a for accelerated expansion?
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![3. Suppose the scale factor varies as a(t) = Act, where A and a are constants.
(a) Can the constant A be negative? Explain your answer.
(b) Find the Hubble parameter II (1)
(c) If the universe is expanding, what is the condition on ?
(d) What is the condition on a for accelerated expansion?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3f5c9d99-8521-472c-b17c-44d18f33795f%2F452eb5b9-0256-4604-9f48-fc8548277fb4%2F14sc7wm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. Suppose the scale factor varies as a(t) = Act, where A and a are constants.
(a) Can the constant A be negative? Explain your answer.
(b) Find the Hubble parameter II (1)
(c) If the universe is expanding, what is the condition on ?
(d) What is the condition on a for accelerated expansion?
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