Recent content by glebovg

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    Understanding Pressure Distribution in a Rotating Vessel of Water

    You might as well just say: start answering the question. Your answer is the most general answer in fluid dynamics! :smile:
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    Understanding Pressure Distribution in a Rotating Vessel of Water

    A closed vessel full of water is rotating with constant angular velocity \Omega about a horizontal axis. Show that the surfaces of equal pressure are circular cylinders whose common axis is at a height g/{\Omega}^2 above the axis of rotation. Any ideas? I do not know how to start.
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    Velocity of two-dimensional flow

    If the velocity in a two-dimensional flow is given as \vec u = \left\langle {u(y),v(y),0} \right\rangle. Why must v be constant? I am not sure where to start. Can anyone help?
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    Never mind. I do not think neither you nor I have a clue.
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    That was very helpful.
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    The reason why I think your approach is incorrect is because we are interested in energy density, but what are the units for spectral radiance? Is it watts per steradian per square meter per hertz?
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    I think the approach you are proposing is incorrect. There must be something easier because Maple cannot even calculate such a small quantity.
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    It is 10^6 I think. I forgot to add that part in my original post. In part a I applied the Stefan Boltzmann law. Is it correct?
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    So, for part b and c I need to find the frequency and then subtract the spectral radiances?
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    Are you sure this is the correct approach? How do I find the wavelength? Using Planck's Postulate or the de Broglie relations?
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    What is the energy density of blackbody radiation at 2.50 x 10^3 K?

    Homework Statement A blackbody is radiating at a temperature of 2.50 x 103 K. a) What is the total energy density of the radiation? b) What fraction of the energy is emitted in the interval between 1.00 and 1.05 eV? c) What fraction is emitted between 10.00 and 10.05 eV? Homework...
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    Undergrad What are Ideals and Polynomial Rings? A Simple Explanation and Concrete Example

    I am looking for a concrete example, which does not require a computer. Can anyone provide such an example?
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    Undergrad What are Ideals and Polynomial Rings? A Simple Explanation and Concrete Example

    Could you give an example with polynomials? Show how you would find the GB. Something that does not require a computational software program?
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    Undergrad What are Ideals and Polynomial Rings? A Simple Explanation and Concrete Example

    Thank you for your explanation, but could you give an example with polynomials? Something that does not require a computational software program?
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    Undergrad What are Ideals and Polynomial Rings? A Simple Explanation and Concrete Example

    Can anyone explain how it relates to the Gröbner bases?