Answers: 1
Physics, 22.06.2019 10:30
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.
Answers: 2
Physics, 22.06.2019 23:40
Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)
Answers: 1
Magnetic lines of force are unaffected by paper, glass, or plastic. true false...
Mathematics, 22.04.2020 21:54
Biology, 22.04.2020 21:54
Physics, 22.04.2020 21:54
Mathematics, 22.04.2020 21:54
Mathematics, 22.04.2020 21:54
Mathematics, 22.04.2020 21:54
Mathematics, 22.04.2020 21:55
Geography, 22.04.2020 21:55
Chemistry, 22.04.2020 21:55
Mathematics, 22.04.2020 21:55