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urza

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  1. OMG thx alot mezarashi, you're a lifesaver this is more than i expected to get thx alot for your time
  2. I'll be taking it next year
  3. well obviously i wouldn't be here if i wasnt stuck and no this isnt a homework assignment and yes i've already drawn the triange in order to visualize it and you can't do it using simple triangle rules... plus have any of you tried doing it before you answered here thx anyway..
  4. hey there can anyone help me with this math problem concerning vectors: Given a triangle ABC. Let D and E be the points defined by BD= 2/3 BC and AE=1/2 AC. The lines (BE) and (AD) intersect at M, and the line thorugh E parallel to (BC) intersects (AD) in F. a) Prove that MD + 4MF = 0 and MB + 4ME = 0. Deduce that 2MA + 3MD=0 b) Show that 5MC = 2CA + CB c) Define L by CL + 2 CA = 0 and I by LI = BC. Prove that C, M, and I are collinear. thx
  5. Can anyone please give me detailed information on how biological clocks in plant work, and examples of disfunction? thx
  6. oil leakages in general as in pipelines, refineries, and not in transportation vehicles and such, more of the ones that deal with freak accidents that destroy nature
  7. it says that they are used as tracers and how it is done, but the explanation is too superficial. Do you know the exact method of how they detect leakeges? as in a step by step thing
  8. urza

    Dragons

    Ya dragons are really something that would be cool if they truly did once exist, But unfortunately it's highly immposible. I doubt there's a possibilty at all. What was the documental called?where did you see it?
  9. hey i'm doing a stastics math project. just wanted to knowif anyone has cool idea on what subject i should do it on.... ie. The number of sales an icecream man makes a week... smthn like that thx
  10. sorry to bother you all again, but i'm having a problem with radioactivity again. I've read that these radioactive isotopes can detect oil leakages. I've ran searches but haven't found any results on exactly how this process occurs. can anyone give me any info? thx
  11. urza

    School Project

    well if there's any biological problems in your community then you should research ways to resolve That exact problem, i have experience in science fairs and i know judges just love it when you do something for the community.. dont get too broad on your subject, like dont do something that would benefit another area, city whatever... do one for your own.. if there's any pollution problem in yor area you can experiment on different ways to reslove that problem... errr just out of curiosity were you born on june?
  12. but you have to break some of the bricks...
  13. then how are the bacteria killed if you say that a gamma ray cannot peneterate the nucleus and make it break apart?
  14. so I understand this is a nono for the agriculture industry. or is it that they only apply it to products that are ready to be shipped and not used for "breeding" purposes?
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