A wave on a string has a frequency of 5 Hz and a wavelength of 0.4 m. What is its speed?
Answer and explanation
Correct answer: A. 2 m/s
- Step 1: v = f x wavelength. Step 2. = 5 x 0.4 = 2 m/s. Answer: 2 m/s. Why not the others: 12.5 m/s: That divides frequency by wavelength. 0.08 m/s: That divides wavelength by frequency. 5.4 m/s: That adds the two numbers.
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