Engineering, 26.07.2019 17:20 cam6836
An fcc iron-carbon alloy initially containing 0.55 wt% c is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 k (1052 c). under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% c. mis process of carbon depletion is termed decarburization.) at what position will the carborn concentration be 025 wt% after a 10-hours treatment? the value of d at 1325 k is 3.3x 10^-11 m^2/s. (you may need to use some properties of error function attached)
Answers: 1
Engineering, 04.07.2019 19:10, Destinationz
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
Engineering, 04.07.2019 19:10, nayi2002
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
Engineering, 04.07.2019 19:10, jennymares
Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m
Answers: 1
An fcc iron-carbon alloy initially containing 0.55 wt% c is exposed to an oxygen-rich and virtually...
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