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Rote Learner

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Everything posted by Rote Learner

  1. Now im stuck with the CC equation with a Delta H and a Delta V as well as two temperatures needed. I graphed the expression by taking e^() of both sides and now have a slope which I believe is the phase separation between the liquid and solid phase. I really have no idea what the question is fully asking and I see nothing online or in my book related to this. Any other pointers will be greatly appreciated. Thank you
  2. The VP of Hg is given by the expression: ln(P/torr)= 7060.7 K/T + 17.85 -At normal BP of Mercury, 629.88 K, the density of the liquid is 12.7 g/mL and the density of the vapor is 3.82 g/L. Find the molar enthalpy (kJ/mol) for vaporization at this temperature. State any "assumptions" made. ---- I tried using Clausius-Clapeyron relation but I dont know what to do with the given relation. I also do not know what to do with the densities. I have been stuck on this problems for hours. Any pointers will be greatly appreciated. Thank you
  3. You are right about the stem cell idea. It is derived from a pig bladder and actually grew back this guys nail and skin. It is being tested by the military right now because our wounded soldiers are the most important right now. They even are tested it in heart surgery and hope to one day have it regrow bone or even entire limbs. It is basically adult stem cells that trick the body into regrowing the cells, rather than healing it as a cut or a broken bone. Here is the video about it: http://www.cbsnews.com/stories/2008/03/22/sunday/main3960219.shtml And an article: http://www.boingboing.net/2008/03/24/pig-bladder-powder-r.html Sorry for the basic explanation, but the details haven't been released because they are fine-tuning it.
  4. I am going into my junior year have about 60 credits and decided to change to physics. It's Applied Physics with a concentration in Engineering. I just added another year of school onto my plate, but I am willing to do it. Do you think it's a wise decision? I got a B in all four physics classes I've taken so far. I am having a hard time with Calculus 2, but I think I can pull it out. Any advice? Im not sure where I can even get a job, but I want to do what interests me. Thanks
  5. I took 4 years of Spanish in high school and can speak some of the dialect from working with Spanish speaking people. I speak English, but not very good at writing it.
  6. His name is Blake VandeMerwe and he is a very smart, motivated kid. He recently won a spot in a group of 200 students (pooled from 150,000) for a chance at a $20,000 scholarship. I can't think of anyone more deserving than him. Just click the link below, vote for Blake and thats all. He is head to head with this other girl for Round 3. http://www.zinch.com/Anonymous/ViewMatchUp.aspx?u1=187959&u2=294113 Thanks
  7. I am currently taking calc 2 because I am lazy and wanted to hold off taking calc 2 because calc one gave me some trouble. I am a mechanical engineering student and I need some help with this one problem. So far I got 18 out of the 19 questions correct, this one is just killing me and I think its just a silly mistake. Thank you
  8. are you saying to lift the ENTIRE car off the ground? or pulling from lets say the wheel well...or the hood or trunk? let's assume you will lift it from the front of the car. apply the e-brake for good measure too. the force you will apply will be in the upward direction. Since you are not lifting all 2,000 lbs due to the back tires planted on the ground, it will be very hard to find the exact force. During this "lift" your forearm respectively rotates about the elbow. This will be the "hinge point" for the applied force. Lets say the distance from the hinge point to the lift is 12 inches. Say you are lifting 1200 lbs of that car. 12X1200 =14400 in lb. Don't worry though, once you get the car lifted, the distance will get smaller and the car will be easier to lift. So at the peak of you lift it should be around: 5 in X 1200 = 60,000 in lb
  9. im not sure i even understand what you are talking about, you need to make it more clear. what is the purpose?
  10. alternate fuels (chemical engineering) prosthetics/artificial organs (biomedical engineering) national infrastructure, roads, bridges, traffic, new roads, SMART roads (civil E) micromachining, robotics, signal processing, (electrical engineering) alternate fuel using cars/vehicles (mechanical engineering) i mean the list goes on, i know in my school Stem Cell research is a big thing
  11. "generated heavy noise and vibration" good idea but prob would never make it past freight planes. when people pay for first class they want a quiet smooth ride and just for the sake of curiosity what do you suggest "These parts must be highly heat-resisting." consist of? i would suggest carburized steel maybe? or maybe some carbon-carbon pistons hahaha I read recently that NASA granted some California company the rights to use a space material for high performance heat resistant pistons
  12. o thank you, haven't gotten around to reading all the rules yet, thank you
  13. For some odd reason the politics thread is set to private so I am posting this here. As most of you may know today is Ron Paul's day of donations. Nov. 5 For those of you who don't know much about Ron Paul here are some links: http://www.ronpaul2008.com/about/ videos: i think he raised around $2.1 million just today. He wants to try to beat Mitt Romney's record of $3.1 million> just something to think about for those of you who haven't heard of him. check out his ideas, he's got my families/friends votes if he makes it to the cards
  14. just saying hi, im new here and hope to contribute
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