Mathematics of Traveling Waves: Four Traveling Waves Are Described by the Following

question 81

Multiple Choice

Mathematics of traveling waves: Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x + 2t)
II: y = 0.15 sin(6x - 3t)
III: y = 0.23 cos(3x + 6t)
IV: y = -0.29 sin(1.5x - t)
Which of these waves have the same speed?

• A) I and III
• B) I and IV
• C) II and III
• D) I and II
• E) III and IV

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