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1. If the current density passing through the n-type 1 ohm-cm Si bar is increased to 104 A/cm2 and 105 A/cm2 (by reducing the cross-sectional area, what are the drift times for an electron across a 1 mm long Si bar?
2. The mobility of electrons in a certain n-type Si is about 1000cm2V-s. What is the scattering mean-free-time of the electrons/ (mn=m).
You bike at 10.5 m/s directly away from your neighbor's trumpet sound and toward the sound of another neighbor's trombone, What frequency is the trombonist producing
The proton and electron are particles found to have equal and opposite charges to the precision that the measurements have been made so far. Why is it important that the proton and electron have exactly the same magnitude for the charge?
Spacing in most book are generally done in units of points andpicas: 12 points = 1 pica, and 6 picas = 1 inch. If a figure wasmisplaced in the page proofs by 1.30 cm, what was the misplacement in both picas and points?
A 12-kg block is held against a spring of force constant 1.0 x104 N/m, compressing it a distance of 0.15 m. How fastis the block moving after it is released and the spring pushesit away?
A 62-kg skier speeds down a trail. The surface is smooth and inclined at an angle of 22 with the horizontal. Determine the normal force acting on the skier
determine the energy content of the food, in kJ/kg, by neglecting the thermal energy stored in the reaction chamber and the energy supplied by the mixer. What is a rough estimate of the error involved in neglecting the thermal energy stored in the..
Consider a rectangular loop of wire 6.3 cm by 8.2 cm in a uniform magnetic field of magnitude 1.7 T. What is the average induced emf in the loop
A rear-wheel-drive car supports 44% of its weight on its two drive wheels and has a coefficient of static friction of 0.80. What is the vehicle's maximum acceleration
The catapult on an aircraft carrier can take an aircraft from 0 to 84.6 meter per second in 6.9 seconds, at which time the aircraft launches. Find the acceleration of the aircraft when it launches
A battery with an emf of 9.00 V has an internal resistance r. When connected to aresistor R, the terminal voltage is 8.80 V and the current is 0.11A. When a second identical battery is added in series and the externalresistor is R = 15 Ohms what i..
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
On sept 8 2004 the genesis spacecraft crashed because the parachutedid not open. The 210kg capsule hit the ground at 311km/h and penitrated the ground to a depth of 81cm. what force did the ground exert on the capsule
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