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The top is little bit of background about the subject. If you decide to solve it on paper please use clear handwriting. Thank you Sub

The top is little bit of background about the subject. If you decide to solve it on paper please use clear handwriting. Thank you

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Sub Problem 2: Looking at the packet in k-space We talked about a particle in a box and how any wavefunction can be written in terms of the particle-in-a box stationary states. Similarly, any good wavefunction for a free particle can be expressed in terms of plane waves, as they are the stationary solutions for the free particle problem: ELt ikx OO OO Note that c(k) is simply a Fourier amplitude of PX,0) Just like ly(x. 0) I told about the distribution of position, Ic k) is the probability density of a particle having a certain wave vector k. a) Calculate c (k) nt: you will obtain a Gaussian) b) Plot Ic(k) as a function of k (k should be in terms of the natural k-units of the problem, i.e. 1/ G) c) Just by looking at the shape of c(k) and inspecting its formula obtained under a), what would you say (k) and Ak should be? (Hint: since the wavepacket is a Gaussian in both x and k, if some characteristic features of the Gaussian in real space relate to (x) and Ax, then analogous features of the Gaussian in k-space relate to (k) and Ak d) How does Ak obtained above from the shape of I c(k compare to the uncertainty of wave number you would get from Problem le? Use Ap hAk

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