Recent content by kiloNewton

  1. K

    Plotting a rotating ellipse trajectory (the Moon orbiting the Earth in 2D)

    Oh wow you are completely right. The eccentricity is way too low to actually notice it rotating... Thanks a bunch for the help, turns out I'm just a dumdum.
  2. K

    Plotting a rotating ellipse trajectory (the Moon orbiting the Earth in 2D)

    I'm tasked with drawing the trajectory of the Moon around the Earth (in 2D), taking into account the fact that the trajectory also undergoes precession, so the elliptical orbit rotates about it's center (I think it should rotate around the Earth-Moon barycenter, but for the first step I...
  3. K

    Honeycomb structure of oil due to an electric field

    Indeed, one pole is on the needle, the other is on the plate beneath the oil. We are using voltage (DC) in the range of 8kV+. As far as the scale, my experiement had consisted of a 15cm diameter plate and a M6 4 cm long screw, yielding similar results. I cannot say about the size used in the...
  4. K

    Honeycomb structure of oil due to an electric field

    Hi, I've been working on a problem for some time now and I can't figure out why exactly this happens, and I've been looking for some insight. The phenomenon can be seen in this video. We can see that the oil rearranges itself due to a high-voltage electric field. Thinking about this, my...
  5. K

    Exam question that I have no idea how to solve (regarding forces and mass)

    1. The problem statement Peter threw 10 (same) coins into an empty container (a tube/drum), which was floating in A LIQUID. The diameter of the container was 2,257 cm, and so because the container is a tube the surface of the tube was equal to π times the diameter squared. He measured, after 4...
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