Which of these is the dominant mechanism for the removal of carbon dioxide from the atmosphere?
A) subduction
B) photosynthesis in plants
C) dissolving carbon dioxide in seawater
D) formation of carbonate-rich rocks at the seafloor
C
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A chimney is constructed of square concrete blocks with a round flue as shown in Figure 2-56. Estimate the heat loss through the cement blocks per meter of chimney if the outer surface temperature is -10ºC and the inner surface temperature is 150ºC.
A car slows down uniformly from a speed of 18.0 m/s to rest in 5.00 s. How far did it travel in that time?
What will be an ideal response?
Which of the following would be the most useful ultraviolet telescope?
A) a 2.5-meter telescope in space B) a 30-meter telescope on a mountain C) a 1-meter telescope in space D) a 10-meter telescope on a mountain
What is the magnitude of the sum of the forces that is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s?
A) 444 N B) 1620 N C) 3240 N D) 4360 N E) 11800 N