nee help asap?

Question

sound wave travel at app. 340 m/s, what is the wavelength when the frequency is 20Hz?what is the wavelength of sound with a frequency of 20kHz? can u plz explain for me thx

Answer 1

Wavelength times frequency equals velocity

Wavelenth is measured in meters
Frequency in inverse seconds or hertz
Velocity in meters per second

Use that equation to solve for everything.

Answer 2

OK, to explain:

20 cycles/second sound completes a cycle every 1/20 seconds or every .05 seconds.

Sound travels 340 meters in a second, so in .05 seconds it travels 340*.05 = 17 meters. That's the wavelength.