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25. If the following waves are superposed y1 = A Cos[k x – w t] and...

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Physics

25. If the following waves are superposed y1 = A Cos[k x – w t]and y2 = A Cos[k x + w t] where A = 0.2 cm, f = 10 Hz and c = 10m/s. (a) Sketch the waveform at time t = 0 and t = 1/40 s. (b) Whatis the distance between the nodes. (c) Determine the kinetic andpotential energy contained within the string section between the anode and an antinode. (d) Show that the total energy between thenode and antinode is a constant in time. Why is this physicallyreasonable?

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