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Consider excitations from level εi = -4 eV with 1025 states/m3 to level ε j = -2.5 eV with 1024 states/m3 in a semiconductor at 295 K. (Treat the states as band-edge equivalent states if you wish.)
(a) How many excitations are there per cubic meter?
(b) What is the energy of the Fermi level?
(c) Repeat for the same case except that level i now has 1026 states/m3 and the temperature is 500 K.
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.
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To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.
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Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.
8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..
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Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
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