Physics, 24.10.2020 08:40 khalfani0268
An iron rod of length 100 m at 10°C is used to measure a distance of 2km on a day when the temperature is 40°C. Calculate the error in measuring the distance. (linear expansivity of iron = 1.2x10-⁵/°C)
Answers: 2
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Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
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Answers: 2
An iron rod of length 100 m at 10°C is used to measure a distance of 2km on a day when the temperatu...
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