21ST C ASTRO EBOOK+SW5=SS+VGCRD+LEARN/DO
6th Edition
ISBN: 9780393870152
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 22, Problem 2QP
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The age of the universe can be determined if
a.
the universe is flat.
b.
the amount of dark matter in the universe can be accurately determined.
c.
the rate of recession of the galaxies in the Local Group can be accurately determined.
d.
the temperature of the cosmic background radiation can be accurately determined.
e.
the Hubble constant and density of the universe can be accurately determined.
If the universe is closed and finite, then
a.
the universe has a center and an edge.
b.
the universe will expand forever.
c.
the final fate of the universe will be very cold and of extremely low density.
d.
the space-time of the universe is negatively curved.
e.
none of the above are true.
Galaxy seeds around which galaxies, clusters, and walls grew may have been
a.
caused by hot dark matter.
b.
caused by baryons.
c.
the result of the separation of the electromagnetic and weak forces.
d.
the result of freezing water molecules shortly after the universe became transparent to photons.
e.
caused by microscopic random fluctuations in the infant universe.
Chapter 22 Solutions
21ST C ASTRO EBOOK+SW5=SS+VGCRD+LEARN/DO
Ch. 22.1 - Prob. 22.1CYUCh. 22.2 - Prob. 22.2CYUCh. 22.3 - Prob. 22.3CYUCh. 22.4 - Prob. 22.4CYUCh. 22.5 - Prob. 22.5CYUCh. 22 - Prob. 1QPCh. 22 - Prob. 2QPCh. 22 - Prob. 3QPCh. 22 - Prob. 4QPCh. 22 - Prob. 5QP
Ch. 22 - Prob. 6QPCh. 22 - Prob. 7QPCh. 22 - Prob. 8QPCh. 22 - Prob. 9QPCh. 22 - Prob. 10QPCh. 22 - Prob. 11QPCh. 22 - Prob. 12QPCh. 22 - Prob. 13QPCh. 22 - Prob. 14QPCh. 22 - Prob. 15QPCh. 22 - Prob. 16QPCh. 22 - Prob. 17QPCh. 22 - Prob. 18QPCh. 22 - Prob. 19QPCh. 22 - Prob. 20QPCh. 22 - Prob. 21QPCh. 22 - Prob. 22QPCh. 22 - Prob. 24QPCh. 22 - Prob. 28QPCh. 22 - Prob. 29QPCh. 22 - Prob. 31QPCh. 22 - Prob. 32QPCh. 22 - Prob. 33QPCh. 22 - Prob. 34QPCh. 22 - Prob. 35QPCh. 22 - Prob. 36QPCh. 22 - Prob. 37QPCh. 22 - Prob. 38QPCh. 22 - Prob. 39QPCh. 22 - Prob. 40QPCh. 22 - Prob. 41QPCh. 22 - Prob. 42QPCh. 22 - Prob. 43QPCh. 22 - Prob. 44QPCh. 22 - Prob. 45QP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Current evidence suggests that the universe is a. flat, infinite, and neither expanding nor contracting. b. closed, finite, and slowing its expansion. c. open, infinite, and slowing its expansion. d. open, finite, and accelerating its expansion. e. flat, infinite, and accelerating its expansion.arrow_forwardThe density of the universe is a. equal to the critical density if the universe is closed. b. equal to the critical density if the universe is flat. c. greater than the critical density if the universe is flat. d. greater than the critical density if the universe is open. e. none of the above.arrow_forward13. Which of the following events in the early universe likely came first? a. Formation of the Earth. b. Big Bang Nucleosynthesis. c. Quantum Gravity Era (Planck Era). d. Inflation. e. Cosmic Microwave Background.arrow_forward
- What was the temperature of the universe when the recombination took place that produced the cosmic background radiation we observe today? a. about 2.7 K b. about 300 K c. about 3000 K d. about 3 million K e. about 3 billion Karrow_forwardIn a Universe with Ω=1, without the presence of dark energy, the expansion of the Universe would a. remain constant over time b. slow down over time c. reverse and then collapse d. speed up over timearrow_forwardThe resolution of Olbers’s paradox suggests that it gets dark at night because a. the universe is not infinite in age. b. the universe is static. c. the universe is closed. d. a and b are true. e. all of the above are true.arrow_forward
- The type of universe in which the average density is predicted to be greatest is the a. open universe. b. flat universe. c. closed universe. d. negatively curved universe.arrow_forwardWhat is the approximate temperature of the universe that we currently observe? a. 0 K b. 2.7 K c. 273 K d. 3000 K e. 6000 Karrow_forwardWe know that dark matter must exist in galaxies. If not, many of the stars in a galaxy would ... a.Expand and go supernova due to the expansion of the Universe b.Fly away from the galaxy because the stars’ velocities are so large, and the galaxy would not have enough gravity to hold onto them c.Orbit the center of the galaxy normally d.Spiral in toward the center of the galaxy because most of the galaxy’s mass would be toward the centerarrow_forward
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