Recent content by Izero

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    Graphical Derivation of x = Asin(ωt)

    Because I still can't fit ω into it in my head! I was trying to reason it through so that it made intuitive sense to me, and the use of ω straight off just doesn't click!
  2. I

    Graphical Derivation of x = Asin(ωt)

    Okay, so y = sin(kx) stretches the graph by a factor of (1/k), right? (compresses it by a factor of k). So stretching it by T would actually be a transformation of x = sin(t/T), which is x = sin(ft). Then you want to 'undo' the pi-ness of the x-axis to make the units seconds (and not have the...
  3. I

    Graphical Derivation of x = Asin(ωt)

    2πf units (and therefore 2πf radians covered). I think I understand what angular frequency is; I just don't seem to be able to relate it to the graph/equation.
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    Graphical Derivation of x = Asin(ωt)

    Homework Statement Deriving the equation for simple harmonic motion, x = Asinωt, graphically. Homework Equations ω = 2πf, where f = 1/T 2. The attempt at a solution Take a sine curve as the simple harmonic motion (displacement, x, on y-axis; time, t, on x-axis), then transform it. The...
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    Electron Drift Velocity in Semiconductors

    Homework Statement "The low [electron] density of a semiconductor means that the conduction electrons travel much faster than they do in conductors." In order to fully understand this, I feel that I need to know why this occurs. Homework Equations I = nAve Where: I = current n = electron...