Homework # 2 - Speed of a Wave Handout Problems: 1. A speaker producing sound waves suddenly doubles the frequency of the sound waves it's producing. What happens to the speed of the waves? What happens to the wavelength? 2. What is the period of a wave if 20 crests pass an observer in 4 seconds? 3. What is the period of a wave whose frequency is 4.5 x 106 Hz? 4. What is the wavelength of radio waves whose frequency is 6.0 x 105 Hz? NOTE: radio waves travel at 3.0 x 108 m/s. 5. What is the frequency of light whose wavelength is 5.0 x 10-7 m? 6. Sound travels at 330 m/s in air. What is the frequency of a sound wave whose wavelength is 2.00 m