1. If wavelength = and speed = , frequency = ?

2. A research vessel uses sonar to measure ocean depth. The onboard system shows the seabed is 450 meters below the ship. If the speed of sound in seawater is 1,530 m/s, how long will it take for the sonar pulse to travel to the seabed and return to the ship?

3. If amplitude doubles, what happens to loudness?

4. If frequency doubles, what happens to pitch?

5. Two sounds are produced with frequencies in the ratio 3:2. If they travel through the same medium (same speed), what is the ratio of their wavelengths?

6. A sound wave has a frequency of 500 Hz and travels at 340 m/s in air. If the same sound travels through water at 1500 m/s without changing frequency, what is the ratio of its wavelength in water to its wavelength in air?