A source is producing 30 waves in 3 seconds. The distance between a crest and the adjacent trough is 5 cm. Find the velocity of the wave?
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Answer:
The velocity of the wave will be 1 meter per second.
Explanation:
Frequency of the wave ν = no. of wave produced /time taken
= 30/3 = 10 Hz.
The distance between a crest and the adjacent trough is λ/2,
λ/2 = 5 cm or λ=10 cm = 0.1 m
The velocity of the wave v = ν λ = 10 x 0.1 = 1 m/s
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