Odpowiedź:
v= λ / T
λ = 20m
T = 5s
v = 20/5 = 4m/s
-----------------------
f = 1/T = 1/5s = 1/5 Hz = 0,2 Hz
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Odpowiedź:
v= λ / T
λ = 20m
T = 5s
v = 20/5 = 4m/s
-----------------------
f = 1/T = 1/5s = 1/5 Hz = 0,2 Hz