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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.
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Physics, 22.06.2019 21:00
The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?
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Physics, 23.06.2019 00:00
You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the
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Physics, 23.06.2019 01:30
Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.
Answers: 1
Health, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
History, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
History, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
Mathematics, 19.07.2019 14:10
Health, 19.07.2019 14:10