Engineering, 16.10.2020 08:01, randomh
Standards for firewalls may be based on their thermal response to a prescribed radiant heat flux. Consider a 0.25-m-thick concrete wall (rho= 2300 kg/m3, c= 880 J/kg·K, k= 1.4 W/m·K), which is at an initial temperature of Ti= 25°C and irradiated at one surface by lamps that provide a uniform heat flux of qs′′= 0.85·104 W/m2. The absorptivity of the surface to the irradiation is αs= 1.0. If building code requirements dictate that the temperatures of the irradiated and back surfaces must not exceed 325°C and 25°C, respectively, after 30 min of heating, will the requirements b
Answers: 3
Engineering, 03.07.2019 15:10, brooklyn674
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 03.07.2019 23:20, abbz13
Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct
Answers: 3
Engineering, 04.07.2019 18:10, qwertylol12345
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
Answers: 2
Engineering, 04.07.2019 18:10, winterblanco
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Standards for firewalls may be based on their thermal response to a prescribed radiant heat flux. Co...
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