Recent content by McAfee

  1. M

    Basic Maxwell Speed Distribution Function

    Homework Statement Homework Equations The Attempt at a Solution I DO NOT NEED HELP WRITING THE PROGRAM! I'm just trying to figure out the basics behind it. Since this is an integral I will be solving this problem by using riemann sums. Where I'm having the most trouble is in the...
  2. M

    Derive the energy equation for a van der Waal gas.

    Homework Statement Derive the energy equation for a van der Waal gas when T and v are the independent variables. Homework Equations I'm required to start from: du=\frac{\partial u}{\partial T} dT +\frac{\partial u}{\partial v} dv The Attempt at a Solution We'll when I first...
  3. M

    Show that the Change in Volume is Independent of the Path

    Ok thanks I'm going to take another look at what I did. Will post when I finish.
  4. M

    Show that the Change in Volume is Independent of the Path

    Here is the work I have done so far. I did use the equations but I was having a hard time understanding in my mind the final values to plug in specifically for the final T value. I assumed it was referring to the final state so I plugged in 400 K. Please let me know if I made any mistakes...
  5. M

    Show that the Change in Volume is Independent of the Path

    So would I have to change the equation of state around and plug it into each change of V, change of T, and change of P? Edit: I should plug them into the partial difference equation? The change in should be constants I think. Edit(again): The only equation I really have to plug in is V=(RT)/P...
  6. M

    Show that the Change in Volume is Independent of the Path

    The equation of state would be PV=nRT. P- pressure V- volume n- number of moles T-temperature R-universal constant
  7. M

    Show that the Change in Volume is Independent of the Path

    Homework Statement Homework Equations The Attempt at a Solution I understand what the question is asking. Both ways I should get the same answer. I'm having trouble figuring out the mathematics behind this question.
  8. M

    Fortran Fortran Help (Do Loop)

    Hey guys, I'm new to fortran and I'm having a slight problem. I put my code below as reference. I first set up a my known values. Then I used an equation to solve for v. After I solve for v I then computed c which involves v. What I'm now trying to do is to loop the value I got for c back...
  9. M

    Two-conductor transmission line, find the potential difference V of th

    Hey guys. I attached my work to this problem before but it didn't go through so here it is. It's ATTACHED. I also included so information from the textbook. if anyone has any ideas please let me know. Also I even asked my teacher and he said the answer I should be getting is the one that is...
  10. M

    Two-conductor transmission line, find the potential difference V of th

    Two-conductor transmission line, find the potential difference V of the two conductors.? Two-conductor transmission line. At point P (x=43 cm, y=32 cm) in Fig. 2-10, |E|=450 V/m. If s=25 cm, h=29 cm, and r=12.5 cm, find the potential difference if these two conductors. Ans. =1.13 kV...
  11. M

    Surface Integral Problem (Answer Already Given)

    Ok I figured it out guys. Thanks to LCKurtz for explaining it to me. The function I had is correct -375r+300. Since it was a circle it was easier for me to put into circular coordinates. So I had to change from dxdy to r dr dΘ Whole set-up: ∫∫-375r+300 r dr dΘ from 0 to 0.8 then from 0...
  12. M

    Surface Integral Problem (Answer Already Given)

    Thanks guys. I will work on it later today and I will get back to you guys. Once again thanks
  13. M

    Surface Integral Problem (Answer Already Given)

    Sorry about that sir. I just edited the original post.
  14. M

    Surface Integral Problem (Answer Already Given)

    Homework Statement The problem is to calculate the flux emanating from the exhaust of a jet engine. The air gas velocity from a jet engine varies linearly from a maximum of 300 m/s at the center of the circular exhaust opening to zero at the edges. If the exhaust diameter is 1.6 m, find...
  15. M

    General Enginnering Problem Dealing with Voltage Supply

    Ok Thanks guys. I'm going to try this in the lab room tomorrow and will reply with my results. Once again, Thanks.
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