You are told that in a thundercloud, a 0.85 g raindrop can acquire a charge of 1.1 mc. a) assume that two such raindrops are separated by 3.9 cm. what is the acceleration, in meters per square second, of each raindrop away from each other? b) the numbers provided seem to be reasonable - why should you not believe the source of this information? a. the acceleration is far too small. b. the raindrops would not stay at a constant distance from each other, so this situation would never occur. c. the acceleration is far too large. d. raindrops are not this size. c) which premise or assumption is responsible for the error? a. the raindrop is too large. b. none of these. c. the mass is too large for a raindrop. d. the assumed charge of the raindrops are too small. e. the assumed charges of the raindrops are too large. f. the mass is too small for a raindrop.

asthenosphere and convection

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

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