Physics, 22.08.2019 20:20 destromero
Consider the flow of a fluid down a long cylindrical tube (of radius a). ignore any viscous effects and assume "plug flow" (velocity is in the z direction with speed v, independent of r or z). the fluid carries with it some molecules of con- centration c(z). the number of these molecules moving down the tube in the z direction per unit time per unit area is j.(z) = vc. the molecules can diffuse radi- ally out through the wall of the tube. the concentration of molecules outside the tube is zero, so the number of molecules moving in the r direction out through the tube wall per unit time per unit area is ja(z) = kc. a) analyze a section of the tube between z ånd z+az. use conservation of the number of molecules to determine a differential equation describing the steady- state concentration distribution, c(z). b) assume that at z = 0, c = co. derive an expression for c(z).
Answers: 1
Physics, 21.06.2019 23:30
Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?
Answers: 3
Physics, 22.06.2019 02:40
What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.
Answers: 2
Physics, 22.06.2019 03:50
Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?
Answers: 1
Physics, 22.06.2019 08:30
Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.
Answers: 1
Consider the flow of a fluid down a long cylindrical tube (of radius a). ignore any viscous effects...
English, 01.12.2021 17:00
Mathematics, 01.12.2021 17:00
Mathematics, 01.12.2021 17:00
Spanish, 01.12.2021 17:00
Physics, 01.12.2021 17:00
Chemistry, 01.12.2021 17:00
Spanish, 01.12.2021 17:00
Computers and Technology, 01.12.2021 17:00
Mathematics, 01.12.2021 17:00