Aperson climbs from a paris metro station to the street level by walking up a stalled escalator in 96.0 s. it takes 72.0 s to ride the same distance when standing on the escalator when it is operating normally. how long would it take for him to climb from the station to the street by walking up the moving escalator?

41.142 seconds

Explanation:

Distance = d

Speed = Distance / Time

Velocity of man

= Velocity of escalator

Velocity of man relative to ground

Time = Distance / Speed

The time it takes for him to climb from the station to the street by walking up the moving escalator is 41.142 seconds

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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365.25 earth days are in the year of a light year