1. A team of tornado-chasing meteorology graduate students is out in search of tornados. They drive directly toward a tornado warning siren at 27.0 m/s. The siren emits sound at 685 Hz. What frequency of sound do the students hear?
2. As you run toward a stationary trumpet player at 5.60 m/s, you hear a tone at a frequency of 580 Hz. Find the frequency you would hear if you stood still. Take 340 m/s for the speed of sound in air.