Question

find the velocity of sound wave if its wavelength is 17 M and its frequency is 20 Hz

Answer 1

wavelength =17 m

frequency = 20 Hertz

velocity = wavelength × frequency

velocity = 17×20

= 340 m/s

Answer 2

$wavlength = 17m \\ frequency = 20hz \\ we \: have \: to \: find \: velocity \: of \: sound \\ velocity = frequency \times wavelength \\ \: \: \: \: \: \: \: \: = 20 \times 17 \\ = 340 \frac{m}{s {}^{2} }$