Answer:
40.56Hertz
Step-by-step explanation:
v=f×lamda( I don't have the symbol)
from the question,
v=23,000
f=?
lamda i.e wavelength=567m
therefore, 23000=f×567
divide by 567
23000/567=567f/567
40.56 Hz=f
so, f=40.56Hz
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