Recent content by Keba

  1. K

    Real world application for math example (Maybe pattern recognition)

    Thank you for responding. I was able to find some of the report, namely the part describing the Truck Dispatching Problem. [PLAIN]"ftp://124.42.15.59/ck/2011-01/165/020/665/238/The%20Truck%20Dispatching%20Problem.pdf"[/URL] It is the exact problem I am having. I found the stated solution hard...
  2. K

    Real world application for math example (Maybe pattern recognition)

    Homework Statement My dad is driving coal. His truck has a limited coal-capacity, and enough fuel. He drives this coal from the central which has enough coal, to farmers that need different amounts. As there are many farmers, he has to drive back and forth several times. He knows all...
  3. K

    Algebra 101, and some about complex numbers

    I see, so my problem wasn't with algebra but with my understanding of complex numbers. Then it makes perfect sense! I thank you good sir =P
  4. K

    Algebra 101, and some about complex numbers

    Homework Statement I was looking up complex numbers and the guy on YouTube made something similar to this equation: i=-1 c^2-(d^2*i^2) = c^2+d^2 ( - 2:55) Homework Equations I do not understand why it is "c^2+d^2" and not "c^2-d^2" I would like a detailed explanation, as I might have...
  5. K

    Aeordynamics, drag, wind resistance - table with Cw values for objects

    [SOLVED] Aeordynamics, drag, wind resistance - table with Cw values for objects Hello I am not using the standard template as this is a minor question in relation to my assignment, and not the actual questions from the assignment itself. I am calculating the curve of a projectile fired at...
  6. K

    Discover the Science Behind Light Disappearance | A Beginner's Guide"

    Okay ^^ I think I understand a little more now. Thanks for the enlightenment guys =)
  7. K

    Discover the Science Behind Light Disappearance | A Beginner's Guide"

    So by using mirrors, as in fiberoptics etc you can make the light last longer as it does not lose so much energy? And what is the energy converted to under collision, heat or sound?
  8. K

    Discover the Science Behind Light Disappearance | A Beginner's Guide"

    I was wondering, why do light disappear? I am new to physics. I do not understand why I cannot just turn my light on for a second, and the light will bounce back and forth for eternity. Some energy must be lost somehow, is that by colliding with solid objects or what? Also, what is light when...
  9. K

    Request: comet projectory calculating tool

    I believe that was what I have been looking for. Thank you tony873004.
  10. K

    Request: comet projectory calculating tool

    Does anyone of of such an application?
  11. K

    How to Control a Motor with Visual Basics and a Serial Port?

    In electronics class we use something called an 'IO-board' which is connected through the serial port. Our teacher has written a script to run it and we can use simple commands to write high/Low out throught 8bit. So we basically use homemade commands like 'getInput()','setDirection()' and...
  12. K

    Request: comet projectory calculating tool

    Hi (I hope I'm posting in the right place) In physics class we are currently working with projectories of comets etc. that reach the orbit of planets, and get pulled in by its gravity. My teacher is currently doing the work in an excel document, but has requested a better solution for...
  13. K

    Difficulties with my assignment. Need help if anyone is up to it.

    Well, thank you for helping me dynamicsolo. I did get a step closer to the goal, and for the rest, I plan to ask a teacher tomorrow. I will go to bed now as it is 22:49 here. I will mark this as solved, and, thank you again dynamicsolo.
  14. K

    Difficulties with my assignment. Need help if anyone is up to it.

    Right before the other calculation, I had this: http://img108.imageshack.us/img108/232/cone2bu9.jpg so, it is before I multiplied with pi. I believe I used the solve function on my texas ti-89 calculator in order to get to the last part. Is this what you meant?
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