A wave has frequency 50 Hz and wavelength 0.2 m. What is its speed?

Answer and explanation

Correct answer: B. 10 m/s

  1. Step 1: Wave equation: .
  2. Step 2: m/s.
Answer
10 m/s.
Why not the others: 250 m/s: it divides frequency by wavelength. 0.004 m/s: it divides wavelength by frequency. 50.2 m/s: it adds the numbers.

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