Answer:
600 m/s
Step-by-step explanation:
Data :
Frequency = f = 20 hz
Wavelenght = λ = 30 m
Formula for wave speed
V = fλ = 20 × 30 = 600 m/s
frequency = speed/ wavelength
speed = wavelength × frequency
speed = 30 × 20
speed = 600mhz
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