PHYS/GEOL 406 Homework
RU Links
  Radford University
  Department of Physics
  RU Planetarium
  RUSMART pages (weather)

Spring 2015 Classes & Info
  PHYS 308
  PHYS 309
  My daily schedule
  My C.V.

Summer jobs/internships
  NSF REU Program (list of REU sites)

Other links
  The Nucleus (resources for
   physics/astronomy undergrads)
  Pre-Health information
   pics from the north pole trip
   the picture from the trip
  Simple 2-liter water rocket
  American Institute of Physics

   Homework #5: Due Friday, February 27, by 5:00pm


  1. Analyze this seismogram using Pickwin (a) to find a good set of parameters to display the information (amplitude, clipping/no clipping, etc.) (b) to pick the first arrivals using either the menu or the button, and (c) to print this out and turn it in with the first arrivals on it and the slope in green indicating the greater speed (take a screen shot since it won't print that green line, and since I need to see the speed at the bottom of the window).
  2. problem 2.3
  3. problem 2.4
  4. problem 2.5
  5. A 6.0-meter-high cylindrical marble column of radius 0.20m supports a stone roof with a mass of 55,000kg. Note: We got the marble from Maryland, not Vermont.
    (a) By how much does the column compress due to the weight of this roof?
    (b) This column also keeps the stone roof from moving to the right since the stone roof has a horizontal force of it of 32,000N. By how much does the top of the column move horizontally because of this force? Note: The shear modulus "S" is given by the textbook as G, defined in Eq. (2.9).
    Hint: Useful information may be found in Table 2.1.
  6. That's all for homework #5.