Engineering, 27.08.2020 14:01 donttrip10
Copper (Cu) has FCC crystal structure. Atomic mass of Cu is 63.55 gmol-1 and radius of a copper atom is 0.128 nm, mean speed of conduction electrons in Cu is 1.5 × 10^6 m/s and frequency of vibration of the Cu atoms at 27 ° is 4 × 10^12 s-1. Nordheim’s Coefficient of Au in Cu is 5500 nΩ −m. a) Calculate the atomic density of copper b) Estimate the drift mobility of electrons in Cu c) Find the resistivity of pure Cu d) Find the resistivity of Cu if 1 at.% of Au is mixed in Cu. pls solve it
Answers: 3
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Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.
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The air in an automobile tire with a volume of 0.015 m3 is at 32°c and 140 kpa gage. determine the amount of air that must be added to raise the pressure to the recommended value of 206 kpa gage. assume the atmospheric pressure to be 128 kpa and the temperature and the volume to remain constant.[r-0.287 kj/kgk]
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Copper (Cu) has FCC crystal structure. Atomic mass of Cu is 63.55 gmol-1 and radius of a copper atom...
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