Recent content by vette982

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    Interesting logic puzzles and brain teasers

    Yeah that's a super clean solution!
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    Interesting logic puzzles and brain teasers

    I thought it would be cool to start a thread with a bunch of interesting logic puzzles, brain teasers, math problems, etc. I'll get the ball rolling: Solution: http://www.mindcipher.com/puzzles/141
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    Calculating the Reynolds Number (Re) for a non-spherical object?

    I have the density (ρ) of the particles and the fluid, as well as the complete dimensions of the non-spherical particles. I know the Force of drag (F) and the Coefficient of drag (C). But how do you get the Reynolds number from this? I can't use Stokes' equations because they only apply to spheres.
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    What Does 'Quake Confinement' Mean in Astrophysics?

    What is "Quake Confinement" Hey everyone, I'm doing an exam review that's telling me to know what "Quake Confinement" means... and other than it occurring at t=10^-7 seconds... I can't find any more info. Any ideas or links?
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    Does Throwing a Brick Overboard Increase or Decrease Lake Water Levels?

    A man is in a rowing boat floating on a lake, in the boat he has a brick. He throws the brick over the side of the boat so as it lands in the water. The brick sinks quickly. The question is, as a result of this does the water level in the lake go up or down? Answer...
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    How Do Photons Exert Force Without Mass?

    If p=E/c for a photon, and I'm given a bunch of other equations such as E=hc/λ and p=h/λ and E=hf and more... Note: h=planck's constant, f=frequency, c=speed of light, E=energy, p=momentum. I'm wondering how to find dp/dt (=Force)?Original question: Photons carry momentum, hence they exert...
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