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  1. H

    Tex symbols

    Hmm... I'm writing a paper and trying to figure out how to make an x-vector symbol.. as in: \beq ds^2=d(\overrightarrow{x})^2+dt^2 \eeq Except with a smaller arrow over the x, as would be seen in a real paper.
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    How do you choose a college

    How does one go about choosing? How did you guys? I can't decide whether I want a big institutional name school or a cute little liberal baby nestled up in the woods of some remote northeast location. I live in NY and don't want to go too far away from home.
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    Eating Healthily

    Just lately I've begun to worry about what I eat. I'm in shape and stuff, probably because I'm 16, but I feel like I should make use of what we know today about vitamins etc. I think I eat pretty unhealthily... All last year, on school days, I ate: No breakfast Lunch: spicy chicken...
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    Excellent Problem!

    I suppose Mods wouldn't like this, but I consider this a particularly excellent problem and it's not actually homework or anything... so: https://www.physicsforums.com/showthread.php?p=722346#post722346 Very tough, very good, etc.
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    Find the angle theta at which the ladder leaves the wall

    A uniform ladder of length L leans against a smooth (no friction) wall. The floor is also smooth (no friction) and the ladder makes an angle of Theta-0 with the floor when the ladder is installed at rest. a) Before the ladder leaves the wall, express the equations of motion of the ladder in...
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    Momentum has to be conserved

    I suppose this sounds a little silly, but: Momentum has to be conserved, but often at the cost of some kinetic energy. For example, if someone throws a 1kg mass at 50kg person at 10 m/s, he catches it: mv=mv (1)10=v(51) v=10/51 KE1=.5(1)(10)^2=50j KE2=.5(51)(10/51)^2=.98j Heat is...
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    Graphing Software

    Hi, I'm currently doing some work with black holes and I need a powerful graphing tool. Are there any free, downloadable graphing programs that can graph polar coordinates without having to make r(t) = ...? I have some irreducable functions I need to view. Thanks!
  8. H

    Graphing Software

    Hi, I'm currently doing some work with black holes and I need a powerful graphing tool. Are there any free, downloadable graphing programs that can graph polar coordinates without having to make r(t) = ...? I have some irreducable functions I need to view. Thanks!
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