PRACTICE 1. A certain FM radio station broadcasts electromagnetic waves at a frequency of 9.05 x 107 Hz. These radio waves travel at a speed of 3.00 x 108 m/s. What is the wavelength of these radio waves? 2. A dog whistle is designed to produce a sound with a frequency beyond that which can be heard by humans (between 20,000 Hz and 27,000 Hz). If a particular whistle produces a sound with a frequency of 2.5 x 104 Hz, what is the sound's wavelength? Assume the speed of sound in air is 331 m/s