Recent content by zvwner

  1. Z

    A Spaghettification: Geometrical & Mathematical Description

    Looking for geometrical description / mathematical approach to describe Spaghettification to a given body. Is there a specific paper (maybe computer simulations) that can serve me to understand in detail the phenomena?
  2. Z

    What happens if you put a sphere (ball) on the top of a pyramid?

    I just thought that if this is a perfect system, it's basically the same that if we place the ball on a flat surface. Because if you place a theoretical perfect sphere on a theoretical perfect surface, they should only touch in one single point. Therefore If that single point is upon a flat...
  3. Z

    What happens if you put a sphere (ball) on the top of a pyramid?

    But if it is a perfect pyramid, I assume it is perfectly pointed. Therefore it can't remain stable. (I am just guessing tho).
  4. Z

    What happens if you put a sphere (ball) on the top of a pyramid?

    I was wondering what happens if you put a perfect sphere (a ball) on the top of a perfect pyramid. To which side will the ball fall and why? It is random? An if it is, does a pattern emerge after many attempts?
  5. Z

    Thermodynamics: find the change of internal energy, the work and Q

    Many thanks for all the comments! I think I got it now. 👌
  6. Z

    Thermodynamics: find the change of internal energy, the work and Q

    Many thanks for your time. So, W = -P⋅V1[(T2/T1) - (1/5)] Now, to determine Q and the internal energy change: I know that: ΔU = W + Q and U = cnT (internal energy equals to the heat capacity by the number of moles by the temperature) At a constant volume. But none of the other values are...
  7. Z

    Thermodynamics: find the change of internal energy, the work and Q

    According to the first principle of thermodynamics: ΔU = W + Q Also noting that: W = -P⋅ΔV (Question: This P is the initial pressure or the final?) To find V2: (P1⋅V1) / T1 = (P2⋅V2) / T2 → Therefore, (P⋅V1) / T1 = [(P/5)⋅V2] / T2 → (P⋅V1) / T1 = (P⋅V2) / (5⋅T2) → V2 = (5⋅T2⋅V1) / T1...
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