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First generation (1960) ultrahigh speed switching Si diodes, and transistors such as the 1N914 and 2N706 used the first supercomputer, the Control Data Corporation model ¢600, obtained their speed by doping with the gold recombination center to a concentration of 1016cm-3 because gold has two very efficient recombination energy levels (see Fig.1) and gold can be diffused into Si quickly at low diffusion temperatures due to Its high diffusivity in Si (see Fig.2).
Suppose that this high-temperature gold diffusivity in Si can be extrapolated to room temperature (300K) using the Arrhenius relationship. (a) What is the gold diffusivity In Si at 300K? and (b) what is the time to failure because the substitutional gold atoms jump (a diffusion step) to adjacent interstitial sites 5A away and Interstitial gold is not an electronic trap.
what is the weight of the Trieste craft?
The far point of a nearsighted person is 5.0m from her eyes, and she wears contacts that enable her to see distant objects clearly. A road sign is 20.0m away and 2.5m high, (a) When she looks through the contacts at the sign, what is its image dis..
What is the fractional decrease in pressure when a barometer is raised 35 m to the top of a building? (Assume that the density of air is constant over that distance.)
A collapsible plastic bag contains a glucose solution. If the average gauge pressure in the vein is 13900 Pa, what must be the minimum height of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is ..
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suppose that you wish to fabricate a uniform wire out of 0.800 g of copper. assume the wire has a resistance r 0.300
A boy is running at a speed of (6.4 m/s) and grabs a rope hanging vertically from a tall tree in order to swing out over a pond. Determine how high can he swing upward
How many oxygen molecules do you inhale if you are at sea level?
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