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A person sitting on a pier observes incoming waves that have a sinusoidal form with a distance of 2.5 m between the crests. If a wave laps against the pier every 5.0 s, what are (a) the frequency and (b) the speed of the wave

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Eduard22sly

Given the data from the question,

A. The frequency of the wave is 0.2 Hz

B. The speed of the wave is 0.5 m/s

A. How to determine the frequency

  • Period (T) = 5 s
  • Frequency (f) =?

f = 1 / T

f = 1 / 5

f = 0.2 Hz

B. How to determine the speed

  • Wavelength (λ) = 2.5 m
  • Frequency (f) = 0.2 Hz
  • Velocity (v) =?

v = λf

v = 2.5 × 0.2

v = 0.5 m/s

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