A wave has frequency 20 Hz and wavelength 1.5 m. What is its speed?
Answer and explanation
Correct answer: B. 30 m/s
- Step 1: Wave speed .
- Step 2: m/s.
Answer
30 m/s.
Why not the others: 13.333 m/s: the frequency was divided by the wavelength. 21.5 m/s: frequency and wavelength were added. 60 m/s: the speed was doubled.
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