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The Hall-effect is used to determine the mobility of holes in a p-type silicon. Assume the bar resistivity is 20,000 ohm -cm the magnitude of Bz = 0.1 wb / m2, and d = w = 3 mm The measured value of the current and hall voltage are 100 mu A and 100 mV respectively. The hall coefficient RH is (m2 / coulombs).
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
An antiproton (same properties as a proton except that q = -e) is moving in the combined electric and magnetic fields of the figure below, in which 1050 V/m is the magnitude of the electric field (directed down) and 466 m/s is the antiproton's speed ..
Two capacitors C1 = 3.8 ?F, C2 = 17.8 ?F are charged individually to V1 = 14.4 V, V2 = 4.3 V. Calculate the final potential difference across the plates of the capacitors once they are connected
How much work does the electric field do in moving a -7.7 microCoulomb charge from ground to a point whose potential is +positive 55V higher.
two test charges are located in the x-y plane. if q1 -3.35 nc and is located at x 0.00 m y 1.080 m and the second
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
Describe the operation of a scanning tunneling microscope and explicitly include how it involves barrier tunneling.
A fisherman reels in 12 of line while landing a fish, using the constant forward pull of 35. How much work does the tension in the line do on fish.
A merry-go-round is shaped approximately as a disk and has a radius of 2.1m and a mass of 172kg. A girl of mass 35kg, who is initially standing still next to the merry-go-round, steps onto it and rides at the outer edge. What is the new angular vel..
A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}.
questiona the proton-proton chain efficiently converts hydrogen into helium according to 4h rarr4 he. a helium 4
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
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