In: Physics
PRELAB QUESTIONS 1) What is a longitudinal wave ? How does it differ from a transverse wave? Which type of wave is sound?
2) How do you know that different frequencies of sound waves all travel at (very nearly) the same speed?
3) Explain why your voice sounds funny if you breathe in helium.
4) You are standing 45 meters in front of a smooth flat rock wall. If you clap your hands together loudly, how much time passes before you hear the echo?