Question

The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second: 

(a) What is the time period of the vibrations ? 

(b) What is the frequency of the vibrations in hertz? 

(c) Can we hear this sound? Why or why not?

Answer 1

(a) The time period = 1/f = 1/500 = 0.002 secs. 

(b) The frequency of the vibrations in hertz is 500 Hz. Because 1Hz = 1 vibration/second. 

(c) We can hear this because it is in the range of 20Hz to 20,000Hz.