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The volume of a liquied flowing out per ...

The volume of a liquied flowing out per second of a pipe of length I and radius r is written by a student as `upsilon =(pi)/(8)(Pr^4)/(etaI)` where P is the pressure difference between the two ends of the pipe and `eta` is coefficient of viscosity of the liquid having dimensioal formula `ML^(-1)T^(-1).` Check whether the equation is dimensionally correct.

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