Question

A sound wave travel at a send of 340m/s.if the wave length of wave is 1.4km.what is frequency

Answer 1

Since
V=λν

Therefore
ν=v/λ
Here v=340 m/s
And λ=1.4 km=140 m


Hence
ν=340/140

Therefore ν=2.42 hz


Hope it helps...!