Recent content by shlomo127

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    How Do You Calculate the Expectation Value for a Particle in an Infinite Box?

    ok, sounds good, can u set up on of the integrals so i can see how to do it? then ill try to evaluate both integrals and ill post what i get. Thanks!
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    How Do You Calculate the Expectation Value for a Particle in an Infinite Box?

    i believe the wave equation is: \psi(x) = Asin(kx) + Bcos(kx) and k=sqrt((2mE)/(h-bar)^2) so then the normalized wave function would be: \psi n(x)=sqrt(2/L)*sin((n*pi*x)/L) and the problem said that n=2. And that's where I get stuck. Am i doing it right thus far? and how do i go...
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    How Do Electron Wavelengths Compare in Different Transitions?

    Homework Statement An electron makes a transition from the third energy level to the lowest energy level in a box of width 0.1 nm. what is the wavelength of the emitted photon? Compare this wavelength with the wavelength associated with the transition from the third energy level to the ground...
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    How Do You Calculate the Expectation Value for a Particle in an Infinite Box?

    ok, I am going to work on that, are there any websites you can recommend to help me learn this stuff? my Prof doesn't explain anything well... thanks!
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    How Do You Calculate the Expectation Value for a Particle in an Infinite Box?

    Homework Statement A particle in an infinite box is in the first excited state (n=2). Obtain the expectation value (1/2)*<x*p+p*x> Homework Equations The Attempt at a Solution I'm completely baffled by this problem. Can anyone just please point me in the right direction and...
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    Finding the amplitude and phase of two sinusoidal motions

    Homework Statement Determine the amplitude and phase of the resultant motion when two sinusoidal motions having the same frequency and traveling in the same direction are combined, if their amplitudes are 3.0 cm and 4.0 cm and they differ in phase by pi/2 radians. Homework Equations...
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    How can I determine the IR frequency?

    Oh, ok. Truthfully I am not 100% sure which I want, but ill forward it to my Professor. Thanks so much! Zachary
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    How can I determine the IR frequency?

    Sorry to ask a stupid question, but what's that in Hurtz?
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    How can I determine the IR frequency?

    Hey, I found this forum on good, so I apoligize for my lack of knowledge, but I am trying to determine the IR frequency of these two IR Text Messengers. Theyre designed to only send messages to one another, so is there any way I could test to discover their frequency? Would it be written...
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