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Homework Assignment #9 February 19, 2018

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Here is the link to HW#9 due on Wednesday, March 14th,  hw9

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Matlab 1st Order ODE Example February 16, 2018

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47618__a-joke-by-sheldon-cooper_pHere is an example of how to solve a first order ordinary differential equation using Matlab. The function in this case is that  dy/dx = – 3 y with the boundary condition that when x = 0 then y(0) = 4. This solution is applicable to solving problem 4.7 in HW8, where in this case, think of the ODE as  dZ/dt = – A V[Z(t)]  and the initial condition is that when t = 0 then Z(0) = 1.3 m. The term A is just a constant that includes all the other variables, make sure your units are all compatible. You would solve this over the time interval from 0 (tstart = 0) to say 100 minutes (tend = 100) and note when Z = 1m which means the bag is empty. Here is the program ODE

An Extra Bernoulli Example February 16, 2018

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 prob458

 

 

 

Homework Assignment #8 – Updated February 12, 2018

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Here is Homework #8  NOW due on February 28th and under my door by March 2nd; work problems 4.7, 4.32, 4.44, 4.53, 4.89, and 4.92.

Homework Assignment #7 February 7, 2018

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For homework #7 work problems 4.27 and 4.47. These problems are due on February 23rd.

On Pitot Tubes February 12, 2018

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  imageAt left are some photos of pitot tubes on the side of a 747 parked at Detroit Metro and one that a student’s friend, an aircraft mechanic, provided. Here’s a news story from ABC about the crash with some animation http://abcnews.go.com/Blotter/air-france-flight-447-crash-didnt-happen-expert/story?id=16717404 and an article from Scientific American http://www.scientificamerican.com/article.cfm?id=what-is-a-pitot-tube .

Chapter 4 Friction Factor Chart February 7, 2018

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bernoulliHere is a friction factor chart, frictionfactorchart

Homework Assignment #6 February 6, 2018

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Here is HW#6  due on February 16th;  4.22, 4.41, 4.42

Homework #5 February 2, 2018

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Here is HW#5 due on February 14th; 4.12, 4.15, 4.18, 4.25, 4.82. ( Note for 4.25 go back and redraw Figure 4.4 in Cartesian coordinates, on your new figure replace r with y and replace z with x, and tau-rz becomes tau-yx, R becomes H, then follow the development in a similar fashion as explained on pages 158-159 but now in Cartesian coordinates),

Homework Assignment #4 January 31, 2018

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homework3Here is homework assignment #4 which is  due on February 9th; work problems 4.1, 4.16, 4.23 (do not find the vz(r) or the mass flow rate), 4.63, 4.78

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