Odpowiedź :
[tex]dane:\\\lambda = 1 \ m\\f = 1 \ Hz = 1 \frac{1}{s}\\szukane:\\v = ?\\\\v = \lambda\cdot f\\\\v = 1 \ m\cdot \frac{1}{s} = 1\frac{m}{s}[/tex]
[tex]dane:\\\lambda = 1 \ m\\f = 1 \ Hz = 1 \frac{1}{s}\\szukane:\\v = ?\\\\v = \lambda\cdot f\\\\v = 1 \ m\cdot \frac{1}{s} = 1\frac{m}{s}[/tex]