Recent content by jimmyct

  1. J

    How do satellites stay in orbit? Free fall or centripetal?

    a explanation of the moon staying in orbit http://math.ucr.edu/home/baez/physics/General/Centrifugal/centri.html
  2. J

    Speed of sound in material under tension

    the pitch was my first thought but I'm not sure its entirely right. the wiki page that was linked in says that the pitch is related to the primary frequency at which the mechanical vibrations are passing through the specimen in which we can hear. But I am thinking that the frequency...
  3. J

    Speed of sound in material under tension

    I have built a loading machine for testing material properties. It applies tension at slow rates (ie 1htz) under load control until the specimen fails. One thing I noticed is that if I tap the material as it is loaded, it seems to give off a different pitch noise when it is under higher tension...
  4. J

    AC voltage source in an open circuit

    Im not sure i really understand the question as it just seems so basic. If you measure the voltage, with an oscilloscope, on a controlled voltage source with respect to ground, you should see the same output voltage and frequency. In most circuit sim tools, such as pspice (or cadence), you...
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