What Are the Wavelength (In Meters) and Frequency (In Hertz) $\sqrt { 2 \pi }$

question 91

Multiple Choice

What are the wavelength (in meters) and frequency (in hertz) of a wave whose displacement is given by the equation y = 0.5 sin(0.20x + 120t) , where x and y are in meters and t is in seconds?

• A) 10 m, 0.50 Hz
• B) 5.0 m, 10 Hz
• C) 19 m, 120 Hz
• D) 31 m, 19 Hz
• E) 0.20 m, 120 \(\sqrt { 2 \pi }\) Hz

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