Recent content by J-villa

  1. J

    Maximizing Vertical Lift: VTOL Engine Designs in Fighter Jets

    The F-22 has one of the most unique designs like this. There is also that "other" VTOL plane the US has been playing with for years. It has a single main engine where the output can twist 90* so it faces down twards the ground it out behind the plane. It also has the 2nd fan in the middle of the...
  2. J

    Lower Level integration problem (Find the centroid)

    oh, duh'. I appreciate the help. I'll respond soon w/ my answer.
  3. J

    Lower Level integration problem (Find the centroid)

    Thank you greatly for the reply. I'm in Calc. II, learning all this integration as fast as I can and I stumble here and there in my theorems. I was looking at my inverse and hyperbolic trig. functions to try and make a connection, but never thought of double substituting regular sine...
  4. J

    Lower Level integration problem (Find the centroid)

    EDIT - Solved. Thank you. Homework Statement Find the Centroid of the region bounded by the x-axis and \sqrt{9-x^2}Homework Equations So far, I found my Mx which ended up being 27p after applying this forumula: p\int(\frac{\sqrt{9-x^2}+0}{2}) (\sqrt{9-x^2}-0)dx *My interval was [-3,3] The...
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