Question

question 3
something has to vibrate between ______ in order for humans to hear it.
○ 20 hz and 20,000 hz
○ 400 hz and 20,000 hz
○ 200 hz and 200,000 hz

Explanation:

The human audible frequency range is typically between 20 Hz (low - pitched sounds) and 20,000 Hz (high - pitched sounds). Frequencies below 20 Hz are infrasound and above 20,000 Hz are ultrasound, which humans can't hear. So the correct option is the one with 20 Hz and 20,000 Hz.

Answer:

A. 20 Hz and 20,000 Hz