Recent content by dauto

  1. D

    Energy per second transferred by the resultant wave

    Neither A) nor B) seem correct to me. May be I misunderstand the question?
  2. D

    Time Dependent Schrodinger Equation

    Quote "I don't remember a lot from DiffEq". Time to do a good review, isn't it? To keep it simple assume V = 0 and do the partial derivatives. What do you get?
  3. D

    Annihilation results in an extreme burst of energy

    What do you mean by "This can make us approximately half as fast as light" ? There seems to be some context missing from your question.
  4. D

    Translational and Rotational Equilibrium

    Does the center of mass of the system accelerate?
  5. D

    Interaction between 2 charges moving at the same velocity

    If they have the same velocity than one is not moving with respect to the other. Thair interaction is described by Coulomb's law.
  6. D

    Frequency of oscillation of a ball?

    The short article you linked is quite interesting but seems unrelated to your question. Can you clarify?
  7. D

    Diff Eqs for a block moving sideways down a plane

    I think the whole premiss that C as defined at the OP is a constant is just pain wrong. Why would that be the case?
  8. D

    How Do You Calculate the Binding Energy of Deuterium's Nucleons?

    Yes, any other value for ψ' would produce a cusp at the origin.
  9. D

    Integration by Parts To Derive Expectation Value of Velocity

    The answer key is correct. Your answer makes no sense. ∂x/∂t = 0 is just an expression of the fact that x and t are independent variables. That's what's meant by a partial derivative. You keep x constant while deriving with respect to t. Well, if x is constant than its derivative with respect to...
  10. D

    A clasic mechanics problom with a moving table

    Two mistakes. T=M*a isn't right because the string sways a1=a2 isn't right either because the pulley is not fixed.
  11. D

    Refractive Index - Lens question

    If the image is virtual than di is negative (according with the most common sign convention which seems to be the one used here).
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    Understanding Standing Wave Loops: Solving a 60 Hz Frequency Question

    Your method is correct. The book's method is messed up.
  13. D

    How much stuff will neutralise the sun's pull on the earth

    The radius of the orbit cancels out of the equations. No need to waste time figuring that factor.
  14. D

    Why does this Lagrangian seem "asymmetric"?

    No, it does not. The "right hand rule" is arbitrary you could just as well use the "left hand rule" and everything would work the same (with reversed direction for the magnetic field since its direction depends on the arbitrary choice of right hand rule. That's why the Magnetic field is a...
  15. D

    Time taken for the big mass to achieve max amplitude

    The question makes no sense, The picture is useless, the grammar is not helping...
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