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The ends of a stretched wire of length l...

The ends of a stretched wire of length l are fixed at x = 0 and x = l. in one experiment, the displacement of the wire is `y_(1) = a sin ((pi x)/(l)) (sin omega t)` and energy `E_(1)` and in another experiment, its displacement is `y_(2) = a sin ((3pi x)/(l)) (sin 3 omega t)` and energy is `E_(2)` then

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