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It has been generally known to Si technologists (such as the CCD or Charge Coupled Device and high efficiency solar cell engineers) that iron impurity is a rather nuisance recombination center because it is highly unstable and its recombination activity disappears in a few days after the device is fabricated and sitting on the shelf.
(a) Demonstrate the fast diffusivity of Fe in Si by extrapolating the high-temperature diffusivity of Fe in Si (given Figure) to room temperature.
(b) If the generation-recombination volume of the CCD or solar cell is in a thin Si surface layer (about 1000A to allow efficient light penetration), and there is a sheet of atomic sink for Fe at 10μm from the Si surface, what is the duration of this instability?
Consider the same mass and spring discussed in the previous problem. What is the magnitude of the maximum acceleration the mass undergoes during its motion?
A model rocket is launched straight upward with an initial speed of 47.8m/s. It accelerates with a constant upward acceleration of 2.07m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by rocket.
You illuminate a slit of width 0.0527 mm with light of wavelength 715 nm and observe the resulting diffraction pattern on a screen that is situated 2.39 m from the slit
A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof 1.00 seconds later , what must be the initial speed of the first ball
A 1 m diameter wagon wheelconsists of a thin rim having a mass of 6 kg and six spokes, eachwith a mass of 1.5 kg. Find the moment of inertia of the wagon wheel for rotation about its axis
A circuit consists on an emf of 48 V, a resistor with R = 8.0 ohms, an inductor with L = 2.0 H, and a switch, all connected in series. At this instant, what is the current in the resistor
there is a pipe that is 120 inches in length and 12 inches in diameter and with a pressure of 10 psi air is pushed
A 3.2 kg block of wood sits on a table. A 3g bullet, fired horizontally at a speed of 490 m/s, goes completely through the block, emerging at a speed of 250m/s. What is the speed of the block immediately after the bullet exits.
A very small charged block with a mass of 2.35 g is placed on an insulated, frictionless plane inclined at an angle of 17.0° with respect to the horizontal, find the sign and magnitude of the charge on the block
A simple pendulum has a length of 1.20 m and a mass of 0.930 kg. Calculate the quantum number n for the pendulum
In Fig. 29-56, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 16.5 cm. Each wire carries 8.00 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and..
A cylindrical conductor has resistance of R0 = 200 ? (ohms). what's the value of the new resistance in ohms
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