Recent content by Dave

  1. Dave

    How to separate one A pill from two identical B pills by weight

    You do not know which pill is which, but you are 100% sure that each of the two piles now contains two halves of pill B and half of pill A. Now go back into the pill A box, take out a pill, cut it in half, and add one half to each stack. Now you have two stacks, each one containing two...
  2. Dave

    Graduate Tensor Product of Covariant and Contravariant Vectors

    I have just finished a math tensor course, it's really a lot of fun once you get going!
  3. Dave

    Undergrad How should I study for first-year mechanics physics?

    Make sure you understand the concepts rather than just rope learning.
  4. Dave

    High School An airplane flies due north at 150km/h with respect to the air

    Does it also imply it's traveling in a direction to do with the air?
  5. Dave

    What's Your Favorite Strategy Game and Why?

    C&C.. great game.. I only have a slow computer tho!
  6. Dave

    Undergrad What is the best energy producing system for its size?

    A superconductor. There's one that can run at 125K I think.
  7. Dave

    News How to feed the world without destroying local economies

    You get the impression the 3rd world countries don't do anything and wait for AIDS to wipe out the African nations...
  8. Dave

    News Who's sick of seeing all those flags everywhere?

    We're certainlly not as patrioctic as you are over here in NZ
  9. Dave

    Undergrad Laser, color and speed of light

    It does if the light is not in a vacuum.
  10. Dave

    High School Do We See In Digital or Analog?

    We see in analog but the messages are sent digitally?
  11. Dave

    What's your age?

    22. Too old and too young.
  12. Dave

    News Who's sick of seeing all those flags everywhere?

    What flags are you talking about?
  13. Dave

    Playing Devil May Cry 2 on PS2

    I love TH3... what's your best combo?
  14. Dave

    Undergrad Is the Wave Aspect of Light More Like a Snake or a Wave in Water?

    A wave in water- I suppose. It means it can have wavelike properties.