[tex]dane:\\v = 340\frac{m}{s}\\f = 2 \ Hz = 2 \frac{1}{s}\\szukane:\\\lambda=?[/tex]
[tex]\lambda = v\cdot T\\\\ale \ \ \ f = \frac{1}{T}, \ zatem\\\\\lambda = \frac{v}{f}\\\\\lambda = \frac{340\frac{m}{s}}{2\frac{1}{s}} = 170 \ m[/tex]
Odp. Długość tej fali λ = 170 m.
