Which of the following statements best reflects our current knowledge about the term flife in the equation Number of Civilizations = Np × flife × fcivilization × fnow?
A) The value of flife must be either 0 percent or 100 percent.
B) The value of flife is between 0 percent and 100 percent.
C) The value of flife is between 0 percent and 1 percent.
D) The value of flife is roughly 50 percent.
E) The value of flife is presently unknown but should be well known within just a few years.
B
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N/C. What is the potential difference VA?VB?
A. 33 V B. 27 V C. 30 V D. 24 V E. 11 V
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Indicate whether the statement is true or false
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a. 83% b. 75% c. 91% d. 68% e. 62%
A boat is floating in a small pond. The boat then sinks so that it is completely submerged. What happens to the level of the pond?
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