a) A flow has a velocity field given by U = xy = yx Compute the...

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a) A flow has a velocity field given by U = xy = yx Compute the rate-of-strain tensor, and evaluate it at the point (2,-5) b) Another flow in a channel has a stress tensor given by X -x y Calculate the stress vector on a fluid particle at the point (2,-5) on the bottom wall. a) A flow has a velocity field given by U = xy = yx Compute the rate-of-strain tensor, and evaluate it at the point (2,-5) b) Another flow in a channel has a stress tensor given by X -x y Calculate the stress vector on a fluid particle at the point (2,-5) on the bottom wall.