When a local AM radio station broadcasts at a frequency of 677 KHz. Calculate the energy of the frequency at which it is broadcasting.?

To calculate the energy of a frequency, we can use the formula ( E = h \cdot f ), where ( E ) is energy, ( h ) is Planck's constant (( 6.626 \times 10^{-34} , \text{J·s} )), and ( f ) is the frequency in hertz. Converting 677 KHz to hertz gives us ( 677,000 , \text{Hz} ). Thus, the energy is ( E = 6.626 \times 10^{-34} , \text{J·s} \times 677,000 , \text{Hz} \approx 4.49 \times 10^{-28} , \text{J} ).