Channel 6 on your television consists of radio waves with wavelengths between 3.41 m and 3.66 m. consider a 25,000-watt television station located 70 km from your home. use the be- low equation for the energy density of blackbody radiation to estimate the ratio of the number of channel 6 photons to the number of cmb photons that your television antenna picks up in this wavelength band. (hint: for the television broadcast, recall that the energy density of an electromagnetic wave is related to the time-averaged poynting vector by u-(s)/c.)