An electric field greater than about 3×106v/m causes air to break down (electrons are removed from the atoms and then recombine, emitting light). if you shuffle along a carpet and then reach for a doorknob, a spark flies across a gap you estimate to be 1mm between your finger and the doorknob.

estimate the voltage between your finger and the doorknob.

Voltage, V = 3000 volts

Explanation:

Given that,

Electric field,

The gap between your finger and the doorknob is 1 mm

We need to find the voltage between your finger and the doorknob. We know that the relation between voltage and electric field is given by :

V = 3000 volts

So, the voltage between your finger and the doorknob is 3000 volts. Hence, this is the required solution.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

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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