1.
[tex]Dane:\\\lambda = 1 \ m\\T = 0,5 \ s\\Szukane:\\v = ?\\\\Rozwiazanie\\\\v = \frac{\lambda}{T}\\\\v = \frac{1 \ m}{0,5 \ s}\\\\\boxed{v = 2\frac{m}{s}}[/tex]
2.
[tex]f = 10 \ kZ = 10 \ 000 \ Hz = 10 \ 000 \ \frac{1}{s}\\\\T = \frac{1}{f}\\\\T = \frac{1}{10000\frac{1}{s}}\\\\\boxed{T = 0,0001 \ s = 0,1 \ ms =100 \ \mu s}[/tex]
3.
[tex]T = 0,002 \ s\\\\f = \frac{1}{T}\\\\f = \frac{1}{0,002 \ s}\\\\\boxed{f = 500 \ Hz}[/tex]
