Modern Physics for Engineers

Problem Set 3

Problem Set - Due in class, Wednesday, Oct. 13, 1999.

    Problems:
  1. SM&M 2-9. How far away from the antenna would you have to go to have a photon intensity of 3x10^16 photons/cm^2 (the equivalent of a photon density of 10^6 /cm^3). You can typically detect an FM radio station 50 miles away. Given that, what is the intensity of photons/cm^2 necessary for a radio receiver to detect a signal?
  2. SM&M 2-16
  3. SM&M 3-28
  4. SM&M 4-12
  5. SM&M 4-28