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You have carefully prepared the wave function of an electron to be in the first energy eigenstate of an infinite potential well spanning a length a. Now you decide to release the electron from the prison by turning off the infinite potential barrier. The electron thus becomes free to move with zero potential everywhere. Your aim now is to make an immediate measurement of the energy of the electron and verify that the probabilities work according to the laws of quantum mechanics.a) To do this you first need to calculate the fourier component of the initial wave function. [Hint: It is useful to express the sinusoidal function as a linear combination of exponentials using Euler's formulas.]b) Simplify your answer by rewriting the exponentials in terms of sines and cosines. What is the energy associated with a fourier component k? Now, you can find the probability density of finding the particle with energy E.c) For very large and very small values of k (or E), what happens to this probability density?d) Intuitively, at what values of energy do you expect the probability density to peak?
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
A lens for a 35mm- camera has a focal length given by = 51mm, What is the magnification of the image on the film
q1. an airplane is flying horizontally with the speed of 1300kmh while an engine falls off. neglecting air resistance
two point charges are on the y axis. A 3.50 uc charge is located at y=1.1cm, and a -2.16 uc charge at y=-1.4cm. find the total electric potential at origin in volts
A cylindrical section of a tree trunk 50 cm in diameter and 75 cm long is seen rolling down a road below a sawmill at a speed of 12 m/s. at least how far up the road is the sawmill
An electric field given by = 7.4· - 4.4(y2 4.7)· pierces a Gaussian cube of edge length 4.0 m, What net charge (in Coulombs) is enclosed by the Gaussian cube
Find out the altitude of the plane
A 211kg rock sits in full sunlight on the edge of a cliff 4.90m high. The temperature of the rock is 30.2?C. what is the final temperature of the rock-water system
q1. a man pulls a crate of mass 75.0 kg across a level floor. he pulls with a force of 180.0 n at an angle of 26.0deg
A drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first springs, determine the weight of the block hanging from the third spring
A 58-kg skater sliding due northeast at an initial speed of 1.5 m/s runs into a snow bank and comes to rest in a time interval of 0.38 s, What is change in the kinetic energy of the skater
A series RCL circuit operating at 60.0 Hz contains a 49-? resistor and an 5.0-µF capacitor. what is the inductance of the inductor in this circuit
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