Physics, 29.06.2019 05:50 studyowl9192
Given two displacement vectors a → = (3.00 i ^ − 4.00 j ^ + 4.00k ^ )m and b → = (2.00 i ^ + 3.00 j ^ − 7.00k ^ )m , find the displacements and their magnitudes for (a) c → = a → + b → and (b) d → = 2 a → − b → .
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
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Given two displacement vectors a → = (3.00 i ^ − 4.00 j ^ + 4.00k ^ )m and b → = (2.00 i ^ + 3.00 j...
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