Recent content by evildarklord1985

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    How Does Expanding a Quantum Potential Well Affect Particle Probability?

    sorry i don't think i encountered any kinds of problem like this in the course...this is a bonus homework of my professor to toture us for Spring break...anyway, what kind of calculation can you do to calculate the overlapping probability you mentioned?
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    How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?

    but then how do you actually carry out the intergration?
  3. E

    How Does Expanding a Quantum Potential Well Affect Particle Probability?

    so, how do i go from what i had to get the solution? I'm confused...how do you actually calculate the probability of finding a particle in its certain state of energy level? All I know is probability of finding the particle in a region of the box...
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    How Does Expanding a Quantum Potential Well Affect Particle Probability?

    oh ok...so with this expression of k , I can write the energy level equation as : E= n^2 * h^2 / 16m a^2...but the question asks about finding the probability of finding the particle. Isn't the total probability just 1 in the whole space?
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    How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?

    so, the harmonic wave function can be written as : N H(y) exp(-1/2 alpha x^2) . With the mentioned boundary condition, do I get N*H(y) = 0 ...how would I go from here on to solve the problem?
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    How Does Expanding a Quantum Potential Well Affect Particle Probability?

    sorry...i thought of using the same method we normally do for particle-in-the-box problem, where psi(x) = A sin(kx) + B cos(kx) . Then, using boundary condition of psi(x)=0 at x=0 , and x=2a... From, psi(0) = 0, B =0 From , psi(2a) =0 ; I got : A sin(2ka) = 0 So, 2ka = n * pi or, k =...
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    How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?

    My first thought about this problem is trying to set up a boundary condition for the wavefunction. For 0<x<A, the wavefunction takes the form of simple harmonic oscillators, i.e. N exp(-1/2 alpha x^2) . With boundary condition where psi(x) = 0 at x=0, I'm stuck with the expression of N=0. Maybe...
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    How Does Expanding a Quantum Potential Well Affect Particle Probability?

    Quantum mechanics- help!? An innitely deep one-dimensional potential well runs from x = 0 to x = a. Let a particle be placed in the ground state corresponding to this system. Then, within innitly short time, expand the potential well so that it now runs from x = 0 to x = 2a. If the energy of...
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    Solve Particle-on-a-Ring Problem: Normalize & Write as Linear Combination

    I have troubles to do this one problem dealing with particle-on-a-ring, Suppose we have a wavefunction as, g(phi) = cos(phi) + 2 sin(2phi) First, normalize the function g(phi). By inspection, or otherwise, write g(phi) as a linear combination of eigenfunction of Lz. State what possible...
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    Absolutely no idea how to solve these

    I'm asking you guys for serious help in these homework for Engineering physics. 1) Protons having a kinetic energy of 5.00 Me are moving in the positive x direction and enter a magnetic field B = 0.050k (T) directed out of the plane of the page and extending from x=0 to x=1.0 m . Calculate...
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