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Question
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
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Solution
We have to find the velocity of the sound wave.
Given: Frequency f = 2,000 Hz
Wavelength λ = 0.65 m
We know the relation between velocity, frequency, and wavelength ν = f × λ,
where ν is the velocity, F the frequency, and λ the wavelength.
So,
ν = (2000) × (0.65) m/s
= 1300 m/s
Therefore, velocity of sound is 1300 m/s.
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