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I do not think h bar will be given as a constant during the test, but the equation of delta x * delta p >=h/4pi will probably on the equation sheet. So don't worry about h bar(unless you really like to use it and if so just remember h bar equals to h/2pi).
He has the equation sheet posted on his website with all the equations he's giving us for the tests. In this case the equation on the sheet is (delta p)(delta x)>=h/(4pi), so you dont need to know the value of hbar since hbar =h/2pi.
H bar just stands for h/2pi. He does have the equation given on the first page of the exams but I would memmorize the equation he has taught us in the class where (indeterminancy in momentum) times (indeterminancy in position) = h/(4pi). As this is just easier to memmorize and use. It is useful to know the concepts behind it but at least for me, when solving questions this format is just easier to use.
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