Recent content by umciukas

  1. U

    Electric field in a more difficult situation

    Could someone give me any ideas on how to calculate the electric field betweet two different size charged plates? The situation sounds like this: a neutral conducting plate is put near a charged smaller plate. Could I say that the induced charge on the bigger plate is uniformly distributed...
  2. U

    Electric field between two charged plates

    They are not infinite plates. But there distance from each other is comperably small to there own size. So what is your opinion? I understand that the field has to be zero between the plates but maybe there are some kind of other effects that would make it different...
  3. U

    Electric field between two charged plates

    Is there any possible way that an electric field between two positivly charged plates (charge is the same on both of them) could induce a charge in a conductor that is put in this field?
  4. U

    Maximizing Telescope Performance: Evaluating Apparent Field with CCD Camera

    How to evaluate a systems consistant of a tlesope and a ccd camera apparent/visible field.
  5. U

    Solve World Physics Olympiad (WOPHO) Problems Together

    how old are you? are you willing to try?
  6. U

    Stargazing Objects Visible with Telescope & CCD Camera - Focal Length 100 cm

    How to determine the obejcts that are possible to be captured with a telescope ( focal length 100 cm, lense diameter 10 cm) and a CCD camera (matrix: 1530x1020 pixels and the length of each pixel 9x9 nanometers). For example the objects could be the moon, Mars, Andromeda galaxy... And what would...
  7. U

    Hard to imagine spring-mass problem

    I believe it wouold generate a longitudinal wave. What would describe the generated waves and be helpfull for solving these problems? I'm asking because I can't find any helpful information about longitudinal waves.
  8. U

    Solve World Physics Olympiad (WOPHO) Problems Together

    So are you solving those problems? Why do you ask if i have solved moscow olympiads problems?
  9. U

    Solve World Physics Olympiad (WOPHO) Problems Together

    Is anyone solving the worlds physics olympiads (wopho) problems? If so, I suggest starting a disccusion about the problems to help each other. In my opinion the problems are difficult and hard just to even understand the situoations that are given.
  10. U

    Hard to imagine spring-mass problem

    It is given that the initial speed is (v), the objects mass is M, the springs constant is (k), and the springs mass per unit length is (a). And you have to derive an equation how speed changes through time. I just want some thoughts about what's going to happen.
  11. U

    Hard to imagine spring-mass problem

    A mass moving with some initial speed hits a very very long NOT massless spring. Friction is ignored. Will all of the kinetic energy that the mass had become the springs potential energy? And when the spring itself would start to move? To me it smells like a nonelastic collision where all the...
  12. U

    Interesting question about electrostatic induction

    A conductive plate with no initial charge is put between two identical positevily charged plates. Is it possible that the plate which is put between those two plates configures a situation where the net force acting upon each plate is zero? (the third plate could have different dimensions then...
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