Answer to Question #258310 in Physics for jay

Question

The volume of liquid V flowing through a pipe of radius r in time t is given by:

V / t = πr 4 (P 1 – P 2 ) / 8ηL

where P 1 and P 2 are the pressures at each end of the pipe, L is its length and η (eta) is a physical quantity

called the viscosity of liquid. Use the following to determine η together with its uncertainty.

r = (0.43 ± 0.01) mm

P 1 = (1.150 ± 0.005) X 10 5 Pa

P 2 = (1.000 ± 0.005) X 10 5 Pa

L = (5.5 ± 0.1) cm

V = (10.0 ± 0.1) cm 3

t = (4.0 ± 0.1) s

Answer 1

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