To jest fizyka 3 str 121 zad 4 pls na teraz

[latex]Dane:\T = frac{1 min}{20} = frac{60s}{20} =3[s]\lambda =14m\\Szukane :\f = ?\v = ?\\Rozwiazanie :\f = frac{1}{T} \\v = frac{lambda}{T} \\\f = frac{1}{3[s]} = 0,3(3) [Hz]\\v = frac{14[m]}{3[s]} =4 frac{2}{3} [ frac{m}{s}] [/latex]