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Two triangular wave pulses are travellin...

Two triangular wave pulses are travelling toward each other on a stretched string as shown in Fig . 7.25. Both pulses are identical to each other and travels at `2.00 cm//s`. The leading edges of the pulses are `1.00 cm `apart at `t = 0` . Sketch the shape of the string at ` t = 0.250 s, t = 0.500 s , t = 0.750 s, t = 1.000 s and t = 1.250 s`.

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