Recent content by kahless2005

  1. K

    Nuclear Engineering Thermodynamic Poerplant Design Problem

    This is a long problem. Apologies and thanks in advance. 1. Given: In the GTHTR300 plant, a fraction b of the coolant mass flow rate is bled off at the exit of the compressor to cool the turbine disks, shaft bearings and the electrical generator. Due to temperature limitations of the...
  2. K

    Poisson's Ratio Need Not Apply?

    A rubber block is subjected to an elongation of 0.03in along the x-axis, and its vertical faces are given a tilt so that theta=89.3deg. Find epsilonx, epsilony, and gammaxy. vr=0.5. The block is 4 in along the x-axis and 3 in along the y-axis. My solution epsilonx = 0.03/4 = .0075...
  3. K

    MATLAB Solving Augmented Matrix: How to Use Matlab for Linear Algebra Help

    I have an augmented matrix that I need to solve. I have broken it into a 4x4 matrix and a vector. As seen below. A= 0 1 1 1; 3 0 3 -4; 1 1 1 2; 2 3 1 3 B= 0; 7; 6; 6 I have already worked the matrix out by hand using Gaussian Elimination and have obtained the solution below...
  4. K

    Tooling question: List of Diameter Sizes?

    Those were the dimensions given to me. I'll bring the three point up to the professor.
  5. K

    Tooling question: List of Diameter Sizes?

    Not Quite what I was looking for, but a search of the website yielded what I needed. Thank you
  6. K

    Tooling question: List of Diameter Sizes?

    I've been working on a tooling Design project for a unique part, basically I'm taking a cast metal piece and drilling and reaming it to be used as an oil flow passage for a Harley Motorcycle. I.e. I'm the (student) engineer that is designing the jig/fixture device to be able to do the work...
  7. K

    Showing Bores in AutoCAD 2-space Top View

    I meant dimension wise. ie. I have a bore that is 0.5 inches deep.
  8. K

    Showing Bores in AutoCAD 2-space Top View

    I have an object that has a bore and a counterbore through it. In a 2-space top view, how do I show the bores?
  9. K

    Solve Statics on a Ramp: Find Cable Force & Pin Hinge A

    Given: A ramp which is sitting as illustrated below. The ramp weighs 200 lb. http://img165.imageshack.us/img165/8601/problem523fe4.th.png Find 1: Cable force (line CD) so that the reaction at point B=0. Find 2: Determine the Horizontal and vertical components of pin hinge at point A...
  10. K

    Find Force Vector (30N) as Cartesian Vector

    I need to find the Forve Vector (30N) as a Cartesian vector. Given the information given, I believe that the angles of the Triangle are: 90, 32.37, and 57.63. This gives the projected vector in the x, y plane as 16.1 N. The answer should be : - 13.2i - 17.7j + 20.3k. Help...
  11. K

    Eigenvalue Method: Solving 2nd Order ODEs

    Given:Second order ODE: x" + 2x' + 3x = 0 Find: a) Write equation as first order ODE b) Apply eigenvalue method to find general soln Solution: Part a, is easy a) y' = -2y - 3x now, how do I do part b? Do I solve it as a [1x2] matrix?
  12. K

    How do I find the volume between intersecting cylinders using triple integrals?

    Imagine a cylinder running up and down the z-axis with a radius a Now imagine a cylinder running up and down the y-axis with a radius a. Thoses are your cylinders. combine the 2, and you will find an intersection from 0 to a on all sides Now I think the limits you are looking for...
  13. K

    What is the method for finding f(t) for F(s) = (s-1)/(s+1)^3?

    Given: F(s) = (s-1)/(s+1)^3 Find: f(t) Solution: Using the equation that when F(s) = n!/(s-a)^(n=1), L^(-1){F(s)} = t^n*e^(at) So far I find that f(t) = e^(-t)*(-t^2+__) The book says that f(t) = e^(-t)*(t-t^2) How did they get the t?
  14. K

    Light: Wave or Particle? - Reflection

    yeah about 0.5Angs if the person is walking an average of 3 miles/h and weighs about 60-70 kg.
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