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  1. J

    Need to chose a sensor for a presentation

    As stated I need to chose a somewhat simple sensor (needs to be fully explained in 3 slides) for a short presentation. I cannot use anything we have discussed at length (accelerometer, strain gauge, thermocouple, LVDT). Any ideas? Thanks
  2. J

    Engineering Filter circuits

    Does the removal of the capacitor make it an amplifier? This would explain the amplified voltage.
  3. J

    Fluid Mechanics

    http://img90.imageshack.us/img90/9176/img062iz2.jpg [Broken] I am having trouble starting excersize 3. If both jets have the same velocity,area, and the same density what would cause the cart to move? If they are mean that the cart is given an intial velocity and I need to give an expression...
  4. J

    Engineering Filter circuits

    It is the circuit in fogure 1 that the other poster linked to. Thanks
  5. J

    Engineering Filter circuits

    Yes, thats is. It started out at about 28 volts and began to decay at about 4000Hz reaching near zero at around 1MHz. We have not dealt with transfer functions, can you be more specific? Thanks
  6. J

    Engineering Filter circuits

    I did a lab using an active low pass filter with an op amp and at the end we were instructed to remove the capacitor that was in parallel with the resistor. The result was an extremely high voltage compared to the voltage with the capacitor in the circuit. We are asked to explain what kind of...
  7. J

    Laplace Transform

    I don't think that is what this theorm calls for, can you verify from th link? He said that he wants us to do it this way even though there are easier ways, go figure...
  8. J

    Laplace Transform

    Sorry, here is the link: http://en.wikipedia.org/wiki/Laplace_transform
  9. J

    Laplace Transform

    Homework Statement Determine L{t sinwt} with the aid of therom 1.31 (its the General Differentiation method on this page: [PLAIN]"link"[/URL] Homework Equations Shown on linked page The Attempt at a Solution I do not understand how to start this becasue I do not have a...
  10. J

    Polar Coordinates

    I understand that as stated in my post under "Relevant Equations", thanks anyways
  11. J

    Polar Coordinates

    Homework Statement The velocity field for a line source in polar coordinates (r,theta) is given by: V=m/(2(pi)r) (in the "e" little r vector direction) convert to cartesian and calculate the strain rate tensor. Homework Equations R=Sqrt(x2+y2); Theta=ArcTan(Y/X); Cartesian...
  12. J

    Equation for measuring strain

    I got it, thanks.
  13. J

    Equation for measuring strain

    DO you know where I can find a derivation of the deformation equation? Thanks
  14. J

    Equation for measuring strain

    Thanks a lot, can't believe I didn't see that!
  15. J

    Equation for measuring strain

    I have a lab where we used the following equation to theroretically measure the strain on a cantilever beam heald stationary at the left end. Measuring back from the right side its length is L2 and the length from the free (right) end to the point where the strain gagues were was L1 (fixed...
  16. J

    Testing How important is FE exam, really?

    It varies by state.
  17. J

    Ratemyprofessors website?

    So much for freedom of speech..... Next they should ban mesage boards that talk about banning websites. Society needs one hell of a slap in the face for all of this babying everyone. What do you end up with, a bunch of babies that want to ban everything offensive. Life is not always warm...
  18. J

    Working in a nuclear power plant

    Are you sold on any plants being completed in the US within the next 10 years? That would be a concern for anyone considering entering the field rigth now IMO. I would recommend that he study ME or EE so he will have other options if public opinion stalls the nuclear energy movement. He can...
  19. J

    Working in a nuclear power plant

    Are those hires for the anticipated plants in Asia and Europe? Not Austrialia right? I have a feeling that once we build one plant in China they will kick us out and copy the design. I have found that staffing cost is not really a big part of the cost for coal plants, fuel is but that may be...
  20. J

    Working in a nuclear power plant

    First off, don't count your reactors before they are built. They have been trying to sell many of the mechanical engineering majors in my school (US) on focusing on nuclear power because there are so few nuclear engineers and all fo these reactors are going to be built. It all sounds good but to...
  21. J

    Ratemyprofessors website?

    Then why not go on the site to give the professor a good review? I think it can be useful if you can differientiate between a raving lazy student and someone who demonstrates specific problems with the teaching method. If a professor has one review from someone complaining that he gives too...
  22. J

    Courses What courses youv'e enjoyed the most?

    I guess I'm the only fan of thermodynamics......
  23. J

    Other Should I Become an Engineer?

    Utter,utter, nonsense. Engineers are among the highest paid professionals out of college and are good candidates for upper management with aquired experience. Everyone feels like a scapegoat at one time or another.
  24. J

    Wondering what's your GPA

    I bumped an old thread with 119 samples of this forums users GPA's. But if you read the thread you will see that the average GPA at one school is much different than at another. I think that there was a poll thread on that subject as well, look around.
  25. J

    Programs Whats your major GPA .Be honest

    Thought I'd give this a bump since the subject has come up again.
  26. J

    Brief history of time any good?

    Its a must read. The book is sort of a comprehensive history of science and philosophy. It really has a good way of putting so much information into perspective, and asks some good questions, I was left pondering the heavens in amazement after each chapter.
  27. J

    Mechanical Engineering

    I doubt the engineers do any assembling, I would guess it's the Mechanics. Also, the engine is not a non-electrical device at all, it is, like most things are becoming "electro-mechanical".
  28. J

    Courses How rigorous do these courses look?

    I took Diff EQ at a CC, have had no problems. Same books, same chapters, the only difference I saw from CC was my bill!
  29. J

    Courses How rigorous do these courses look?

    Those are the basic math and physics courses that all engineers take. The survey course looks like a refresher course for those who have been out of school for awhile. (its kind of strange that english is a prereq for mechanics??????)
  30. J

    Solar Future?

    Unfortunatly they are too focused on the near-term profits that coal provides. There is enough coal to last at least 100-200 years so are we going to see a major investment in it before then?
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