Two Sinusoidal Waves Travel Along the Same String

question 49

Multiple Choice

Two sinusoidal waves travel along the same string.They have the same wavelength and frequency.Their amplitudes are y_m1 = 2.5 mm and y_m2 = 4.5 mm, and their phases are π/4 rad and π/2 rad, respectively.What are the amplitude and phase of the resultant wave?

• A)cannot solve without knowing the wavelength
• B)5.1 mm, 0.51 rad
• C)5.1 mm, 0.79 rad
• D)6.5 mm, 1.3 rad
• E)7.0 mm, 1.3 rad

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