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Consider a well of width a =10 nm confined between barriers of thickness b = 3 nm and height V0 = 0.3 eV. The energy Epk of the resonant state can be estimated from the result for the true well (Section 4.2). Next estimate the transmission coefficient of each barrier at Epk and use this to find the lifetime and width of the resonance.
Suppose the insulating qualities of the wall of a house come mainly from a 4.0-in. layer of brick and an R-19 layer of insulation, What is the total rate of heat loss through such a wall
An alpha particle (charge 2e) is sent at high speed toward a gold nucleus. The electric force acting on alpha particle is 91 N when it's 2.00 x 10^(exponent)-14m away from the gold nucleus What is the charge on gold nucleus, as a whole number mult..
A stone is dropped from a balloon rising at 10 m/s and reaches the ground in 8 sec. How high was the balloon when the stone was dropped
A subway train starts from rest at a station and accelerates at a rate of 1.50m/s2 for 14.2s. find total distance covered
A train started from rest and moved with constant acceleration. At one time it was move traveling at 33.0 m/s, and 160 meter farther on it was traveling at 54.0 m/s. Determine the time required to attain the speed of 33.0 m/s
You throw a ball towards a wall at speed 20 m/s and at an angle 40o above the horizontal. Compute how long does the ball take to reach the wall in seconds
The first car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 9.0m/s, What were the original speeds of the two cars
The woman then starts walking clockwise around the rim at .75 rad/s. in what direction and with what angular speed does the turntable rotate.
A proton is accelerated from rest by a potential difference of 335 V. The proton enters a uniform magnetic field and follows a circular path of radius 25 cm. Determine the magnitude of the magnetic field.
A uniform disk with a mass of 130 kg and a radius of 1.1 m rotates initially with an angular speed of 950 rev/min. How much work must this force do to stop the wheel
If 0.2 kg of chai tea at 90 degrees C is poured into a 0.3 kg cglass cup(C=840 J/kg K) at 20 degrees C, what is the final temperature of the chai tea
q1. a long straight wire is in the plane of the page and carries a current of a. point p is also in a plane of the page
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