Question

a sound wave has a frequency of 2Hz and wave length of 40cm how long it takes to travel 1.6km

Answer 1

Speed = Frequency * Wavelength
Speed = 2 * 40 = 80cm/s = 0.8m/s

Time = $\frac{Distance}{Speed}$ = $\frac{1600}{0.8}$ = 2000s = 33.33min