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PhysicStud01
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Homework Statement
Homework Equations
the equation is given in the question
The Attempt at a Solution
i tried replacing the 2/3 pi rad as the cos argument and i obtained 2. but the mark scheme says that the position is 3cm above AB.
in the next part, we have a phase diff of 4/3 pi and i again obtained 2 but the MS still says 3cm above AB. can someone help. am i doing a mistake here.