question archive You have survivalist friends who, convinced that Armageddon is just around the corner, paid a lot of money to have an underground shelter installed in a remote location
You have survivalist friends who, convinced that Armageddon is just around the corner, paid a lot of money to have an underground shelter installed in a remote location
Subject:PhysicsPrice: Bought3
You have survivalist friends who, convinced that Armageddon is just
around the corner, paid a lot of money to have an underground shelter installed in a remote location. The problem is that the contractor did such a great job concealing the entrance to the
shelter than no onecan find it. Knowing that you learned about subsurface imaging in your Intro Geophysics class, they have come to you for help in trying to locate it. While they can't recall the location, they do know that the shelter is approximately spherical in shape, 3 meters in diameter, and the top entrance is 2 meters below the surface. How accurate must your readings be in order to detect the shelter (in the sense that you will need to be at least as accurate as the maximum value of the signal produced by the tunnel)? Assume that the rocks surrounding the shelter have a uniform density
of 2.67 gr/cm3
