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Question: problem 1 4 pt we derived the shear stress formula...

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Problem 1 (4 pt) We derived the shear stress formula at the bottom surface of a rectangular channel, see below diagram and equation. How can be independent of viscosity? If we have cells in a microchannel and we run flow at a certain flow rate (Qu_ave*A), and then we substitute the fluid by a more viscous fluid but keeping the flow rate constant, dont we increase the force exerted on the cells? If so, which is right, the formula or our intuition? 0 9 2 0 cosh ( ) osh2h 8h dp
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