Figure P12.72A shows two wave pulses at time t = 0 s. The pulses travel at 5 cm/s in opp...

Figure P12.72A shows two wave pulses at time t = 0 s. The pulses travel at 5 cm/s in opposite directions. (a) Sketch the resulting waveform for the times t = 1 s, 2 s, and 3 s. (b) Figure P12.72B shows a different set of two pulses. Sketch the resulting waveform for these pulses at the times t = 1 s, 2 s, and 3 s.