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kevincaleb1
20.09.2019 •
Chemistry
Calculate the distance in meters a swimmer would travel in 1.5 hours at an average velocity of 2.0km/h
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Ответ:
distance = speed (velocity) * time
2km/h * 1.5hrs = 3km
Ответ:
78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.[8] Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. Air composition, temperature, and atmospheric pressure vary with altitude, and air suitable for use in photosynthesis by terrestrial plants and breathing of terrestrial animals is found. only in Earth's troposphere and in artificial atmospheres.
hope it helps...