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Which equation could be rearranged to calculate the frequency of a wave?

wavelength = frequency/speed
frequency = wavelength/speed
wavelength = speed/frequency
frequency = speed x wavelength

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Answered by GPT-5 mini AI
Answer: "wavelength = speed/frequency" (the third option).

Reason: wavelength = speed/frequency can be written λ = v/f. Rearranging: multiply both sides by f to get fλ = v, then divide by λ to get f = v/λ (frequency = speed ÷ wavelength).