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λ=1m dlugosc fali
V=2m/s
OBL T
T*V=λ
T=λ/V=1/2s
ODP
T=0,5s
Pozdrawiam
T= 1m/2m/s // 'm' się skraca, zostaje 's'
T=0,5s
V=2m/s
λ=V/f =>f=2Hz
T=1/f
T=0,5s.