A diffusion couple is formed between a special stainless steel and nickel. A temperature of 2500 degrees Celsius is held there for 20 hours. The initial concentration of nickel in steel is 0.40 wt%, and the surface concentration is 1.00 wt%. How long will it take for the steel to reach a nickel content of 0.60 wt% at a distance of 0.6 mm into the steel

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.