A wave has a frequency of 20 Hz and a wavelength of 17 m. What is its speed?
Answer and explanation
Correct answer: D. 340 m/s
- Step 1: v = f x lambda. Step 2. v = 20 x 17 = 340 m/s. Answer: 340 m/s. Why not the others: 1.2 m/s: this divides frequency by wavelength. 0.8 m/s: this divides wavelength by frequency. 37 m/s: this adds frequency and wavelength.
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