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BigMoosie

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Everything posted by BigMoosie

  1. Yes you can! This article might be of interest: http://en.wikipedia.org/wiki/Double-slit_experiment
  2. I don't know of any but I wouldn't be surprised if there are, teachers often simplify things to make the syllabus easier to learn, for instance I was told none of the noble gases could form compounds but apparently there are many discovered. Sorry not to answer your question but I just had to correct your spelling of "oxadise", it is actually "oxidise".
  3. My answer is [math]15m^2s^{-1}[/math]: Base = 6 Side = 4t Height = [math]\sqrt{16t^2-9}[/math] Area = [math]f(t) = 3 (16t^2-9)^{0.5}[/math] [math]f'(t) = 48t ( 16t^2 - 9)^{-0.5}[/math] f'(1.25) = 15
  4. What does the Firefox Gmail Notifier offer that the regular one doesnt (i.e. the one that sits on the taskbar next to the clock).
  5. I would suggest making a new data type and allow users to enter strings like: "4x^12 - 3x^3"; // etc Then overload some operators and you will have a pretty useful tool. I am working on a javaScript implementation of this, a polynomial object type that allows factorisation, multiplication etc. When I finish I will post my source code if you are interested, I have already written the input parser.
  6. That looks useful, I will keep an eye on it until it updates to 1.5 compatability. Some I find useful: Flashgot - Download files into download manager programs like Getright. Web Developer Toolbar - Heaps of tools for modifying the page or finding out information about it such as headers, cookies set etc. Reload Every - Enables you to reload the page on a regular interval. IE view - Open a link in IE, useful for when developing websites or when they break in FF.
  7. Why not just build an elastic bridge and let the rest sort itself out?
  8. That yellow is ghastly, it would probably drive me away before I even read anything. I feel that the colours that work best are eather black or soft pastelly colours.
  9. My music teacher several years ago stated that she could hear the information loss in CDs. She claimed that she could hear an improvement of quality in records over CDs. I have read about CD technology and remember finding that the sampling rate was well above our perception and the same went for bit-depth. Is this really possible or is she most likely just making this up? Also, what is (roughly) the lowest bit-rate required for an mp3 before it becomes impossible to notice the compression? I can notice for 128 but not 160.
  10. It's funny becuase I started this today in maths (yr 12) and asked my teacher the same question without a satisfying response. Though I figured this: [math]f(x) = x^4[/math] [math]f''(x) = 12x^2[/math] [math]f''(0) = 0[/math] Therfore point of inflexion, oh no, razzamatazz, we know this is a minimum from experience. It is in fact a tripple root and is also a double inflexion. Not sure how to actually solve this properly without having to try above and below, though I am guessing that you have to take the quadruple derivative: [math]f''''(x) = 24 > 0[/math] Therfore it is a minimum.
  11. Builgate, didn't see your post until now.
  12. I think 2601 is actually the correct answer: There will be 51 possible values of £2, each time leaving a left over of 0,2,4,6...98,100. Each of these values will be made up of a some £1 and an even number of 50p coins. For each value there is value+1 ways of making it up. So we have to solve: 1 + 3 + 5 + .... + 99 + 101 The arithmetic series can be totalled with this formula: [math]S_n = \tfrac{n}{2}(a + l)[/math] Where n is the number of values, a is the first value and l is the last. So: [math]S_n = \frac{51 * (1+101)}{2}[/math] Which equals 2601.
  13. I get an answer of 2601 using this algorithm, is there something wrong with my logic? var a, b, c, total=0; for (a=0; a<=200; a++) for (b=0; b<=100; b++) for (c=0; c<=50; c++) if (a/2 + b + 2*c == 100) total++; alert(total);
  14. Visualise a cross section that passes through the point and is perpendicular to the plane, for any angle you choose it will be just the same as a porabola (i.e. equidistant to a point and a line) so it goes to reason that it will be a porabola rotated around its axis.
  15. Positron emission is when a proton decays into a neutron and emits a positron and a neutrino. Electron capture is the same thing but instead of emitting a postron it absorbes an electron from one of its shells. They are similar in that they both decrease the element number by 1 but are distinct, electron capture occurs instead of positron emission when the nucleus has less energy. Thats about all I know about it. A negatron is another name for electron that failed to gain popularity.
  16. Evolution is a clear contradiction of that.
  17. [math]F = G\frac{M_1 M_2}{d^2}[/math] Does this equation make the presumption that the Earth is a point gravity source? It seems so becuase taking d down to low values (i.e. close to the center of the Earth) there would be practically no gravity due to it being cancelled out in every dirction, though the formula suggests that it should approach infinite force. Is there a modification of this formula that takes into account the radius of the masses? (presuming they are spherical)
  18. If you know nothing about these concepts then a forum is not the best place to get help, try doing a google search or use these links: Wikipedia Limit (mathematics) Derivative
  19. Its not source code, it's the porpperties of particular buttons, for example WS_TABSTOP means that you can press tab to apply focus to it (I think), "Show the cloc&k" is the text that appears when you hover over the button with the & being before the letter k which is the hotkey, the numbers are coordinates of the button etc. This program will allow you to view and modify the interface of programs but not how they function. Be careful, depending on how a program was written, modifying something seemingly unimportant can crash your system.
  20. How can I burn some of my .mpg's to a DVD? I can only do it as a data DVD through nero, I want to be able to play them on a DVD player connected to a TV. Do I need to download some special software? or can it be done through windows? I'm pretty new to burning so appreciate the help.
  21. The algorith you specified would be: function gcd(a, b) while a ≠ b if a > b a := a - b else b := b - a return a According to wiki a more efficient algorith is: function gcd(a, b) while b ≠ 0 var t := b b := a modulo b a := t return a Though I would be inclined to initialise the variable t before entering the loop.
  22. It is rather quite bizarre, when I imagine running my teeth against sandy concrete my neck tightens up and I pull my head back to relieve the strange uneasy feeling I get. I can resist it but doing so just makes me feel more strange (cant quite think of a word to best describe the feeling). This happens every single time I think about it, even now as I type. I do not experience this feeling for any other thoughts. Is this experience common? Does it have a name?
  23. I don't particularly fancy fruit very much, nor do I enjoy drinking water unless I am truly thirsty to the point of dehydration. I would much prefer to drink several litres of fruit juice per day. Would this be adequate to no longer have to drink water or eat fruit? Would it have any negative effects on my health? I felt this was the most appropriate forum, please advise me if this is not true.
  24. are you saying infinity is a value not a concept?
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