leasiamoore
30.10.2021 •
Physics
A professor has to haul a cart down a ramp. The ramp has an angle of about 10 degrees and is about 5 meters long. His initial speed at the top of the ramp is 5.4 m/s, and the cart has a mass of about 100 kg. How hard does he have to pull on the cart so that at the bottom of the ramp, its speed does not exceed 6.4 m/s
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Ответ:
The ice sheet as a record of past climates
Scientists have, using those ice cores, obtained information on (proxies for) temperature, ocean volume, precipitation, chemistry and gas composition of the lower atmosphere, volcanic eruptions, solar variability, sea-surface productivity, desert extent and forest fires.