EBK COSMIC PERSPECTIVE, THE
EBK COSMIC PERSPECTIVE, THE
8th Edition
ISBN: 8220101465108
Author: Voit
Publisher: PEARSON
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Chapter S4, Problem 60EAP

Beyond the Standard Model. Research some of the ideas that physicists are considering as possible improvements on the standard model. Choose one such idea, and write a short essay describing its potential effect on physics if it is correct, and how the idea may be tested.

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Hubble's First Attempt. Edwin Hubble's first attempt to measure the universe's expansion rate was flawed because the standard candles he was using were not properly calibrated. Look at (Figure 1)  a.Estimate the value of Ho corresponding to the solid line in the figure. Express your answer kilometers per second per million light-years to two significant figures. b.What is the approximate age of the universe indicated by that erroneous value of Ho? Express your answer in years to one significant figure.
a. Describe three of the six possible scenarios for the fate of the universe. For each case, describe: • what conditions will be like • the curvature of the universe • which term (gravity, expansion, or dark energy) in the Friedman equation would dominate. b. Observationally, what scenario best describes our universe? Explain.
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