Recent content by saching

  1. S

    Alkyl halides left in an open container what happens?

    Homework Statement A student left some alkyl halides (RCI and RBr) in an open container for several hours. What happened to the composition of the halide mixture during that time? Assume that some liquid remains in the container. Homework Equations From...
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    Linear programming: simplex question (might belong in precal)

    Homework Statement Original question: The Cut-Right Company sells sets of kitchen knives. The Basic Set consists of 2 utility knives and 1 chef’s knife. The Regular Set consists of 2 utility knives, 1 chef’s knife, and 1 slicer. The Deluxe Set consists of 3 utility knives, 1 chef’s knife...
  3. S

    Computing work in an isothermal process

    I was reviewing some notes on the Carnot cycle and noticed that to compute the work done along an isotherm you take the integral of PdV from the initial to final volume. What value do you use for P since P is not held constant on an isothermal curve? Why is P treated as a constant?
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    Master Simple Harmonic Motion: Learn the Basics with Online Tutorials

    Hrmm? I'm not sure if I understand what exactly you need to know about simple harmonic motion. What level are you at with math?
  5. S

    Transforming a parabolic pde to normal form

    [SOLVED] transforming a parabolic pde to normal form Homework Statement The problem is to transform the PDE to normal form. The PDE in question is parabolic: U_{xx} - 2U_{xy} + U_{yy} = 0 but I also need to solve other problems for hyperbolic pde's so general advice would be appreciated...
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    A naive question about entropy.

    I've constantly heard professors answer questions about entropy with a statement about how even if the entropy of a system is decreasing the entropy of the universe is increasing. How can we discuss the entropy of the universe if information can't be communicated between all points in space at...
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