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(a) Show that for Poiseuille flow in a tube of radius R themagnitude of the wall

Fundamentals of Fluid Mechanics | 8th Edition | ISBN: 9781119080701 | Authors: Philip M. Gerhart, Andrew L. Gerhart, John I. Hochstein ISBN: 9781119080701 456

Solution for problem 6.90 Chapter 6.9.3

Fundamentals of Fluid Mechanics | 8th Edition

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Fundamentals of Fluid Mechanics | 8th Edition | ISBN: 9781119080701 | Authors: Philip M. Gerhart, Andrew L. Gerhart, John I. Hochstein

Fundamentals of Fluid Mechanics | 8th Edition

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Problem 6.90

(a) Show that for Poiseuille flow in a tube of radius R themagnitude of the wall shearing stress, rz, can be obtained from therelationship(rz)wall = 4QR3for a Newtonian fluid of viscosity . The volume rate of flow is Q.(b) Determine the magnitude of the wall shearing stress for a fluidhaving a viscosity of 0.004 N s/m2 flowing with an average velocityof 130 mm/s in a 2-mm-diameter tube.

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PhylumArthropoda -Arachnids, Crustaceans, Insects thing about orders: know the class not the order We live in the age of arthropods. There are over three times as many species of arthropods as all other animal species on Earth put together. There may be as many as 20 to 30 million species of arthropods waiting to be discovered. Most of them are insects. At any one moment, there are some 10 individual arthropods alive on this planet. That’s ten billion billion organisms!! PhylumArthropoda Nearly 1.2 million named species of arthropods, does not include extinct species Subphylum Trilobita dominated Paleozoic marine ecology, over 10,000 species The cockroaches of the Cambrian… Some of the most ferocious predators in the history of life were arthropods Like Anomalocaris, worlds first large predator, a mighty 18” long… The terror of the trilobites! The giant sea scorpions were top dogs in the Paleozoic oceans Eurypterids were the largest arthropods that ever lived, up to nine feet long! Over one million named species (named), fr. Greek arthros = jointed, poda = foot Jointed appendages Eucoelomate protostomes Crustaceans dominate the sea, and insects dominate the land With few exceptions, each sticks to its own turf… Share common ancestor with polychaete worms Phylum Onychophora – velvet worms are sister clade, share common anc

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Chapter 6.9.3, Problem 6.90 is Solved
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Textbook: Fundamentals of Fluid Mechanics
Edition: 8
Author: Philip M. Gerhart, Andrew L. Gerhart, John I. Hochstein
ISBN: 9781119080701

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(a) Show that for Poiseuille flow in a tube of radius R themagnitude of the wall