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A high electron mobility transistor (HEMT) controls large currents by applying a small voltage to a thin sheet of electrons. The density and mobility of the electrons in the sheet are critical for the operation of the HEMT. HEMTs consisting of AIGaN/GaN/Si are being studied because they promise better performance at higher powers, temperatures, and frequencies than conventional silicon HEMTs can achieve. In one study, the Hall effect was used to measure the density of electrons in one of these new HEMTs. When a current of 11.9 ?A flows through the length of the electron sheet, which is 1.06 mm long, 0.455 mm wide, and 13.1 nm thick, a magnetic field of 1.01 T perpendicular to the sheet produces a voltage of 0.613 mV across the width of the sheet. What is the density of electrons per m3 in the sheet? Do not enter unit.
Two, concentric, thin spherical shells of radii R1 = 40.8 cm and R2 = 51.0 cm are uniformly charged with a total charge Q1 = â€"50.5 μC, What is the potential of the outer shell
If it takes 3.60 x10-13 s for a nitrogen molecule to hit the wall and rebound with the same speed but moving in an opposite direction (assumed to be the negative direction), what is the average acceleration of the molecule for the period of this t..
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, find the absolute pressure PB in the bulb
You place a 4.47-mm-high diamond on the axis of and 11.3 cm from a lens with focal length -6.79 cm. How high is the image
A luge and its rider, with a total mass of 83kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 44m/s. Assume that they stop with the constant deceleration of 2.9 m/s2.
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70{\rm m/s} relative to the ground. What is the magnitude of the ball's velocity relative to Juan
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. find the magnitude of the frictional force exerted on the ladder
Cat rides a merry-go-round turning counter clock wise at a uniform speed. There, the cat is under uniform circular motion. what is the time taken by the cat to complete a full circle
Predict the effect on concentration of SO3 as equilibrium is achieved by using Q, the reaction quotient. 2 SO3(g) 2 SO2(g) + O2(g
two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 448 N and F2 = 350 N. What is the resultant of these two forces
One of the fastest recorded pitches in major-league baseball, thrown by Tim Lincecum in 2009, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away
A wave on a Slinky has a frequency of 1.69 Hz. It takes 4.1 s to travel the length of the Slinky (0.29 m). What is the wavelength.
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