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Physics, 22.06.2019 12:30, ayoismeisjjjjuan
Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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Physics, 23.06.2019 00:30, oldless504
What practical value did astronomy offer to ancient civilizations?
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Physics, 23.06.2019 02:10, eddiecas
The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 β 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).
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an airplane flies 270km due east, makes a right angle turn, and then flies 440km due north. from the...
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