English listening. what do you hear Here or Hear? #shorts

Your clock radio awakens you with a steady and irritating sound of frequency 600 Hz. On morning, it malfunction and cannot be turned off. In frustration, you drop the clock radio out of your fourth-story dorm wndow 15.0m from the ground. Assume the speed of sound is 343 m/s. As you listen to the falling clock radio, what frequency do you hear just before you hear it striking the ground?

How do we hear sound?

The hearing range of human ear is

The hearing range of human ear is