Transport Definition and 265 Threads

  1. Cyrus

    How Does the Reynolds Transport Theorem Apply to Electromagnetics?

    I have come across the Reynolds Transport Theorm in my study of Fluid Dynamics, and it's a very powerful tool. \frac {DB_{sys}}{Dt} = \frac{ \delta}{\delta t} \int_{cv} \rho b dV + \int_{cs} \rho b \vec {V} \cdot \hat {n} dA Where B is any extensive property of the system, and b is any...
  2. wolram

    Future of Personal Transport: Electric Vehicles

    The IC engine has evolved all most to its limits of mph, mpg reliability, electric vehicles are still on the horizon, where is the future in PT?
  3. S

    Path-ordered product in parallel transport

    I'm reading about bundes and connections but I cannot get past a little problem involving path-ordered exponentials. I hope someone can help me out. I'll try to state the problem as well as possible with plain text LaTeX. My question is just this: How does the the integral (of a general...
  4. S

    Solving a Robotic Transport Challenge: Stumped on Spherical Tyres

    I had planned to use spherical tyres for my engg. project on a robotic transport vehicle, but I'm stumped on how to get it done. Magnetic force could be an answer but monopoles are not possible...i'm stumped...Could someone provide me the answer:??:bugeye: thethi.hs@gmail.com
  5. A

    How does Cyanide block the electron transport system?

    How do deadly chemicals like Cyanide, block the electron tranport sytem??
  6. R

    Why Do We Use Cylinder Tanks for Fuel Transport?

    I have a doubt... Hi, I want to know, why do we use tanks with cylinder forms for fuel transportation and not with another geometric form, like a 3D rectangle (i don't know the english word for it... :smile:) ? thanks...
  7. M

    Fermi-Walker transport - problem with a minus sign

    I am looking at the Fermi-Walker transport of a tetrad transported by an observer in circular motion in Minkowski space. The 0-component of the tetrad should be the 4-velocity of the observer, which should therefore satisfy the FWT DE, but I'm finding that it is equal to the negative of what it...
  8. P

    Fermi-Walker transport non-rotating particle

    Imagine a non-rotating particle, one with zero angular momentum. Attach a tetrad of orthonormal vectors to the particle. Imagine that we accelerate the particle via a force through it's center of mass, so that it follows some curve through space-time parametreized as x^i(\tau) while...
  9. S

    Can Quantum Systems Transport Information Without Altering It?

    In quantum systems/domain, the transporting of information from two locations, say A to B is the basis of all quantum connective logistic processes. What process, is available for the transport of information, without altering the information, surely if your moving information, you are...
  10. J

    Parallel Transport and Triangle Excess Angle

    hi, i am trying to show that the amount by which a vector is rotated by parallel transport around a triangle whose sides are arcs of great circles equals the excess of the sum of the angles over 180 degrees. this is what i have found out so far call the angles of the triangle (assuming...
  11. C

    Transport across cell membranes

    Transport across cell membranes... I was reading my textbook and it said, "Fat-soluble molecules, such as glycerol, can diffuse through the membrane easily. They dissolve in the phospholipid bilayer and pass through it in the direction of the concentration gradient, from a high concentration to...
  12. maddy

    Lie transport vs. parallel transport

    I learned that there exists a difference between Lie transport and parallel transport and what that difference is in differential geometry, but I'm getting all confused again when I read the explanation given in the 'intro to differential forms' thread (below). (posted by jeff) How do we do...
  13. M

    A jet transport has a weight of 2.97 x 106 N and is at rest on the runway

    I have two problems for homework that I just can't seem to figure out. Can someone please help me?! Thanks. 1) A jet transport has a weight of 2.97 x 106 N and is at rest on the runway. The two rear wheels are 17 m behind the front wheel, and the plane's center of gravity is 13.1 m behind the...
  14. STAii

    Transport Proteins in Plasma Membrane

    Greetings. According to my textbook (again, this might not be really accurate because of translation): Now, here is my question : If proteins are just molecules (big ones i guess), how do they 'know' what the cell needs at a certain time (to let it into the cell) ? Thanks in advance.
  15. M

    Building a Custom Transport Vehicle: What are the Legal Requirements?

    Ok, awfully long subject, but its an attention getter. Anyhow, my friends and I have been wanting to build small, 1 - 2 seater transport vehicles. I've got some basics on my ideas, hoping to get as light of a vehicle as possible, while meeting modern safety and emmission standards. So for...
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