Why are you running?
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Assuming a linear velocity profile, find the boundary layer thickness the wall shear stress, the displacement thickness and the drag for a flat plate with zero pressure gradient and free stream velocity U0. The plate has length L and width b. Do you have flow separation? If the answer is yes or no, explain why.
Periodic tune-ups are important because they
A. Extend the life of your cars
B. Help you avoid costly repairs
C. Prevent dangerous breakdowns
d. All of the above
you have been hired to design a family-friendly seesaw
rom the end of the board when seated. You have selected a child of mass, (seated furthest from the pivot) and an adult of mass, (seated closest to the pivot) to test out your prototype.
a. Determine the distance d in meters.
b. Determine the magnitude of the force exerted on the pivot point by the see-saw while in use in newtons.