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yuradex [85]
3 years ago
9

100 POINTS AND BRAINLIEST.

Physics
1 answer:
olya-2409 [2.1K]3 years ago
5 0

Answer:

I think the answer must be A.

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NNADVOKAT [17]

Here's what you need to know about waves:

Wavelength = (speed) / (frequency)

Now ... The question gives you the speed and the frequency,
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The thing that's making the waves is vibrating 47 times in 26.9 seconds.
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