A wave has a frequency of and a wavelength of . What is its speed (in m/s)?
Answer and explanation
Correct answer: A. 250
**
- Step 1: Use the standard wave speed formula .
- Step 2: Setting and , we get .
- Step 3: The calculated speed is .
Answer
250.
Why not the others: '10' divides frequency by wavelength () instead of multiplying; '55' adds frequency and wavelength () instead of multiplying; '500' multiplies by an extra factor of .
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