Measurement of the Sizes of Hot Spots in the Temperature

question 165

Multiple Choice

Measurement of the sizes of hot spots in the temperature distribution of the cosmic microwave background suggests that the universe is flat.Yet the combined density of all the matter and energy we see,plus the dark matter we infer,is only about a quarter of the critical density.What conclusion have we drawn from this discrepancy?

• A) The universe is not flat after all.
• B) There must be a large amount of luminous matter and radiation in the universe that we have not yet found.
• C) The universe is smaller than we have been assuming and thus the measured density is larger.
• D) There is an entity to which we have given the name "dark energy" that contributes to the total density but that we cannot detect by the usual methods.

Identify the factors influencing the effectiveness of monetary policy in recessionary periods.

Recognize the impact of financial regulations on the banking sector and financial crises.

Understand the role and implications of TARP during the financial crisis.

Analyze the reasons behind the housing crisis and the role of mortgage market changes.

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