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ironizer's Achievements


Baryon (4/13)



  1. Hmm... nevermind I guess, I invented my own. Got the idea last night, this design uses 3 gears and a lever. Basically if one wheel is slowed down, it will transfer the rest of the torque to the other wheel. Super simple, works on relative motion between two gears. Now I just need to learn how to draw in Solidworks so I can mill these out.
  2. I want to build an RC car so I can familiarize myself with the machine shop at my school. The car will be simple and I have everything figured out except the differential. I want to put an electric brushless motor on the rear axle, but I don't think I could just have 1 drive shaft for both rear wheels and gear it up that way. I need to figure out how to make a differential so the outer wheel can rotate faster during turns. I know most RC cars have some system like this but I haven't been able to figure out how it works. Also I can't seem to figure out how to invent one myself so I need some links/ideas. The tools available to me are: precision lathes, 2-axis mills, water jet cutter, bandsaw, grinders, drills, hand tools, etc... Any help appreciated.
  3. How can I calculate the maximum potential generated? I don't know how to calculate the field, all I have is the magnet but how do I measure its field in Tesla or Gauss?
  4. Nothing I do ever works. I made my solenoid type thing with about 300 turns, and Im using strong neodymium magnets... I get 0.02 volts when I pull the magnet out very fast... it is not enough. I want to make a series of these solenoids so when I move the magnet across I want to "feel" a drag, and I want to actually produce some electricity (it will be AC but it's okay). If I move the magnet at 20-30m/s I want to get at least a few volts. So what's the trick to making one of these generators? Am I building it wrong? What sort of resistors can I hook up so that I feel it hard in my hand to swipe the magnet across the top or the solenoids?
  5. The hit they gave us was to separate the two equations. I don't know what that means.
  6. Yeah I see what you're saying. But even if you don't make the assumption, you can still solve 13th power equations using Newton's method. Try both, then we can see if it's close enough to just assume the reaction goes to completion.
  7. Oh my bad. Sorry. Question is: "Calculate the equilibrium pressures of all gases."
  8. Give me a clue please. I have no idea what do do: Suppose 1.51 atm of CH4(g), 2.23 atm of C2H6(g), and 15.53 atm of O2(g) are placed in a flask at a given temperature. The reactions are given below. CH4(g) + 2 O2(g) <-> CO2(g) + 2 H2O(g) KP = 1.0 x 10^4 2 C2H6(g) + 7 O2(g) <-> 4 CO2(g) + 6 H2O(g) KP = 1.0 x 10^8 Thanks a lot. Anything helps.
  9. Ok so I was reading up some more on this, but nobody talks about why this oxidation stuff makes sense. Maybe it just doesn't, I don't know. To me it seems like somebody made all these rules up. Book doesn't explain why things are like that, example: Fluorine is always assigned -1, so SF6 would be -6 fluorine and +6 sulfur. Why? This is exactly why I hate chemistry, nothing makes logical sense. You can't just "think about it" and understand it. In physics and math you can figure things out on your own, in chemistry you just have to memorize crap and take someone's word for it, and not even be given an explanation. I can't wait until the end of the quarter so I wouldn't have to put up with this BS. And why is it called oxydation where there isn't necessarily any oxygen involved?
  10. The problem with paying attention in class is that he didn't go over Redox reactions until today, so I guess I wasn't supposed to know this until now. And I did pay attention to the Redox lecture, but I don't really understand the meaning of the Oxidation Numbers. What are they? How are they useful?
  11. Ok this question is the real BS: The blood alcohol (C2H5OH) level can be determined by titrating a sample of blood plasma with an acidic potassium dichromate solution, resulting in the production of Cr3+(aq) and carbon dioxide. The reaction can be monitored because the dichromate ion (Cr2O72-) is orange in solution, and the Cr3+ ion is green. The unbalanced redox equation is shown below. Cr2O72-(aq) + C2H5OH(aq) → Cr3+(aq) + CO2(g) If 31.05 mL of 0.0600 M potassium dichromate solution is required to titrate 30.0 g of blood plasma, determine the mass percent of alcohol in the blood. I have no clue where to even start. I don't know how to balance that equation, as I dont even know how the atoms move around.I dont see any poly ions in the alcohol or the dichromate. So hits please.
  12. This one is extremely easy to figure out. I figured it out on my own when i was 15. If you switch, you get twice as better chance of getting the car. This problem is a quick IQ test I offer people when i meet them to see if they're smart or dumb.
  13. Ye true, UC's answer is what I was looking for. Now it makes sense. But the answer is still useful, I don't really need to learn to "fish" here because chemistry is BS and as soon as I'm done taking the required 2 quarters of chem I'll kick chemistry in the nuts and ditch it for good. Then I can go do my physics/maths and all the other useful studies. 49.0 was what I had to enter in, because they give the grams to 3 significant figures. Now I'm done and I can go watch some of the Australian Open. Go Federer.
  14. I don't even see what the question is asking. What does it mean, "what's the % KClO3 in the mixture?" ? Is it KClO3 mixed with KCl or what?
  15. I can't figure out what this means. What is it even asking?
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