Two harmonic waves travel simultaneously along a long wire. Their wave functions are y 1 = 0.002cos
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Two harmonic waves travel simultaneously along a long wire. Their wave functions are y1 = 0.002cos (8.0x - 400t) and y2 = 0.002cos (7.6x - 380t), where y and x are in meters and t in seconds.
(a) Write the wave function for the resultant wave in the form of Equation 5-15.
(b) What is the phase velocity of the resultant wave?
(c) What is the group velocity?
(d) Calculate the range Δx between successive zeros of the group and relate it to Δk.
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a b c d Successive zeros of the envelope requ...View the full answer
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