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Sketch the potential energy or EC and EV as a function of position in a semiconductor crystal which contains
(a) a complete random distribution of a small fraction of the host atoms from their lattice sites,
(b) non-crystalline or amorphous regions where the host atoms are completely randomly located,
(c) donor impurity atoms located on a superlattice,
(d) substiitutional donor impurity atoms completely randomly distributed,
(e) substitutional donor impurity atoms not as randomly distributed as in problem (d),
(f) donor-acceptor impurity pairs whose separation in completely randomly distributed.
You throw a 20-N rock vertically into the air from ground level. You observe that when it is a height 15.2m above the ground, find its speed just as it left the ground
The electric field at the point x = 15.0 cm and y = 0 points in the positive x direction with a magnitude of 10.0 N/C. Find the location of the point charge
An object is placed in front of a concave mirror with a 24.1-cm radius of curvature. A real image twice the size of the object is formed. At what distance is the object from the mirror
A motor has a constant angular acceleration of 5rev/sec2. If the motor goes from low speed of 1200RPM tohigh speed in 5 seconds, what is the high speed
A railroad car of mass 2.48 x 104 kilogram is moving with a speed of 3.82 m/s. Calculate the speed of the four cars after the collision
At three corners of a rectangle (length 11.8 cm, height 5.9 cm), the following charges are located: q1 (upper left corner), q2 (lower right corner), and q (lower left corner).
Two ants race across a table 56 cm long. One travels at 4.5cm/s and the other at 2cm/s. When the first one crosses the finish line how far behind is the second one.
a 70 kg diver steps off a 10 m tower and drops straight downinto the water. determine the average resistance force exerted by the water on the diver
a battleship simultaneously fires two shells toward two identical enemy ships. one shell hits ship a which is close by
Q) What is the equation in standard form of the line which passes through (1, -3) and has a slope of 2?
A position vector in the first quadrant has an x component of 8 m and a magnitude of 10 m. What is the value of its y component?
Two lenses having focal lengths of f1=15 cm and f2=9 cm are separated by a distance of 50cm. If the lenses are moved into contact, what is their combined focal length
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