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A piston pushes 20 ∘C water through a horizontal tube of 0.23 −cm radius and 2.7...

A piston pushes 20 ∘C water through a horizontal tube of 0.23 −cm radius and 2.7 m length. One end of the tube is open and at atmospheric pressure.

Determine the force needed to push the piston so that the flow rate is 105 cm3/s . The viscosity of water at this temperature is 1.0 ×10−3 N⋅s/m2.

Express your answer with the appropriate units.

Repeat the problem using SAE 10 oil instead of water. The viscosity of oil is 0.20 N⋅s/m2.

Express your answer with the appropriate units.

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Answer #1

(a) The flow rate is, 0 (8-B) 8nL (1.01x10º – P.) (+ (0.23x10-2)*) 105x100= 8(1x10-*)(2.7) 2.376x10* = (1.01x10® – P.)(+(0.23

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