1. The ripples on a pond have wavelength of 0.02m and frequency of 4Hz. What is their velocity? 2. If the wave machine in a swimming pool generates waves with a frequency of 0.3Hz and they travel at 1.4m/s, what is their wavelength? 3. What is the frequency of a sound that has a wavelength of 0.4m if sound travels at 333m/s? 4. What is the speed of radio waves if they have a wavelength of 8000m and a frequency of 37500Hz? 5. Use the wave speed that you have just calculated to find the wavelength of radio waves that have a frequency of 65,000,000Hz