Question

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Answer 1

I think the answer might be A

Answer 2

Q1: 340m/s

Step-by-step explanation:

Q1: The velocity of the wave is the product of frequency and wavelength of the wave;

V = F λ

V is the velocity

F is the frequency

λ is the wavelength

Insert the parameters and solve;

V = 2 x 170 = 340m/s