Recent content by ItDoesn'tMatter

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    Undergrad Calculating the moment of inertia of a rod as a point mass

    The moment of inertia of a rod with consistent density rotating about its end is M(L^2)/3. However, if you treat the rod as a point mass and try to calculate this using mr^2, you get M(L/2)^2=M(L^2)/4. Why doesn't this work?
    • ItDoesn'tMatter
    • Thread
    • Inertia Mass Mechanics Moment Moment of inertia Physics Point Rod
    • Replies: 2
    • Forum: Mechanics
  2. I

    Which materials have the highest coefficients of friction?

    I am aware that there needs to be two materials for there to be a coefficient of friction, but I mean in general. For example, I know synthetic setae are very resistant to slipping on surfaces.
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    Question about the specific effects of SSRIs

    I know that SSRIs inhibit the reuptake of serotonin from synapses, and therefore cause the receptors on the postsynaptic neuron to be activated for a longer period of time. Does this have any effect on the signal sent? (for example, does it make it so the signal takes longer to process?, etc)
  4. I

    Is the minimum Gibbs free energy the same for every material?

    We were learning about the change in free energy in class, but I was wondering since the Gibbs free energy decreases as a system becomes more stable, is the minimum absolute free energy for a material the same for every material, or can other materials be more stable than others?
    • ItDoesn'tMatter
    • Thread
    • Energy Free energy Gibbs Gibbs free energy Material Minimum
    • Replies: 1
    • Forum: Chemistry
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    Which wavelengths cause the photolysis of water to happen?

    I was wondering which specific wavelengths of light cause the photolysis of water to happen.