[tex]Dane:\\f_{o} = 600 \ Hz\\v_{o} = 108\frac{km}{h} = 30\frac{m}{s}\\v = 340\frac{m}{s} \ - \ predkosc \ fali \ dzwiekowej\\Szukane:\\f = ?\\\\\\f = f_{o}\cdot\frac{v}{v-v_{o}}\\\\f = 600 \ Hz\cdot\frac{340\frac{m}{s}}{340\frac{m}{s}-30\frac{m}{s}}\\\\\boxed{f = 658,06 \ Hz}[/tex]
