際際滷

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Catherinee Lin

The document describes an iClicker question about wave interference. The question asks about two waves traveling in opposite directions at 20 m/s that interfere constructively and destructively at different points. The correct answer is that constructive interference (where waves combine to produce larger displacements) occurs at points b and d, while destructive interference (where waves cancel each other out) occurs at points a and c.

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Yiying Lin 15621148 LO 7/8 iClicker questions on wave interference 1. Two simple harmonic waves have some wave speed 20m/s, direction of one wave is to the right side, the other one is to the left side (according to the graphs). The following graph shows the shape of waves at a specific time. Which one of the following is true? A. Two waves frequencies are both 2.5Hz B. At point b and d, the interference is stronger; at point a and c, the interference is smaller C. At this time, the particle speed at point b and d is zero and the particle speed at point a and c is maximum. D. After 0.1 s, the particle of point a is at crest and the particle of point c is at trough. answer: B

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  • 1. Yiying Lin 15621148 LO 7/8 iClicker questions on wave interference 1. Two simple harmonic waves have some wave speed 20m/s, direction of one wave is to the right side, the other one is to the left side (according to the graphs). The following graph shows the shape of waves at a specific time. Which one of the following is true? A. Two waves frequencies are both 2.5Hz B. At point b and d, the interference is stronger; at point a and c, the interference is smaller C. At this time, the particle speed at point b and d is zero and the particle speed at point a and c is maximum. D. After 0.1 s, the particle of point a is at crest and the particle of point c is at trough. answer: B