Determine the carburizing time, t, necessary to achieve a carbon concentration of 0.45 wt% at a position of 2mm into an iron-carbon alloy that initially contains 0.20 wt% c. the surface concentration is to be maintained at 1.30 wt% c, and the treatment is to be conducted at 1000 ℃. diffusion data is for -fe (austenite).

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

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.