[tex]Dane:\\v = 2\frac{m}{s}\\f = 1 \ Hz = 1 \frac{1}{s}\\Szukane:\\\lambda = ?\\\\Rozwiazanie\\\\\lambda = v\cdot T\\\\ale \ \ T = \frac{1}{f}, \ zatem:\\\\\lambda = \frac{v}{f}\\\\\lambda = \frac{2\frac{m}{s}}{1 \ Hz} = \frac{2\frac{m}{s}}{1 \frac{1}{s}}\\\\\boxed{\lambda = 2 \ m}[/tex]
Odp. Długość tej fali λ = 2 m.
