Sound Calculations 1. A 30 cm violin string vibrates in its fundamental mode and produces a concert A pitch of 440 Hz. The temperature of the room is 21"C. a. What is the speed of the wave in the violin string? What is the speed of the wave in the air? b. Explain how you chose which information to use in the two calculations above. 2. A deep, dark well has vertical sides and water at the bottom. You clap your hand and hear the sound wave from your clap return 0.42 s later. The air in the well is cool, with a temperature of 14"C. How far down in the well is the water surface? 3. You are at a large outdoor concert, seated 300 m from the speaker system. It is a cool summer evening with a temperature of 18-C. The concert is broadcast live via satellite (at the speed of light, 3.0 x 10* m/s). Consider a listener 5000 kem away from the broadcast. Who hears the music first, you or the listener and by what time difference