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133.

Problem 17.47E (HRW)

Two sinusoidal waves with identical wavelengths and amplitudes travel in opposite directions along a string with a speed of . The time interval between instants when the string is flat is 0.50 s. We have to find the wavelength of the waves.

Solution:             Click For PDF Version

As the two identical waves are moving along a string in opposite directions with a speed of , they can be represented by the functions

The resultant wave is

The time interval T between instants when the string is flat is 0. 50 s. This implies