Question

If the speed of sound in air is 343 m/s, what is the shortest wavelength of sound that humans can hear?

Answer 1

f = 1/T = 20,000 so T = 1/20,000
distance = speed * time
L = 343 T
L = 343/20,000
L =. 01715 meters or about 1.7 centimeters

Answer 2

We know, Wavelength = speed / frequency

Highest frequency (normally that humans can hear) = 20 KHz
= 20,000 Hz (for shortest wavelength)

Speed = 343 m/s

Substitute their values,
wavelength = 343 / 20,000
w = 0.01715

In short, Your Answer would be: 0.01715 m

Hope this helps!