Lesson: Chapter 4 — Waves and their applications
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A wave has a frequency of 5 Hz and a wavelength of 2 m. What is its speed?
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10 m s-1. v = f λ = 5 Hz × 2 m = 10 m s-1.
Adding the two numbers gives 7, and dividing them gives 2.5 or 0.4 — none of which the equation says to do.
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