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Homework Statement
first of all, when two waves are out of phase. We tend to ay one wave lags by the other wave of x degrees. So what does lag mean. does it mean its displacement is less or more and how do i calculate the value of x.
and does x also mean the phase difference between the two waves?
so if x is o degrees both waves are coherent? yes or no
and then in that case they superpose to form wave of resultand displacement due to both of the waves