The boundary layer thickness is usually defined as the distance from the wall to the point where the flow velocity reaches 99 % of the free stream value.
In the very thin boundary layer associated with free stream flows with high Reynolds numbers, a steep rise in velocity occurs perpendicular to the wall.
Boundary layer thickness = 0.37*Distance on x-axis/(Reynolds Number^(1/5))
δ = 0.37*x/(Re^(1/5))
This formula uses 3 Variables:
Variables Used
Boundary layer thickness - (Measured in Meter) - Boundary layer thickness is the distance normal to the wall to a point where the flow velocity has essentially reached the 'asymptotic' velocity.
Distance on x-axis - (Measured in Meter) - Distance on x-axis is the distance of point measured along x-axis form origin.
Reynolds Number - The Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
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Number 1 I know is correct
Answer:
the Open Web Application Security Project (OWASP)
Explanation:
Answer:
D. threat; challenge
Explanation:
Anything that causes an organisms stress process to initiate is called a stressor.
Threat is something that can cause us harm or something which we perceive might cause us harm.
A challenge is a threat, if overcome can cause us to grow our personality.
So, a threat is something which we cannot overcome while a challenge is a threat which we perceive can overcome and will be beneficial for us.
Answer:
No.
Explanation:
As the exercise introduces, when the Great Depression broke out, the American federal government had no programs in place to deal with homelessness and joblessness. This was due to the totally colapsing economy of the country; the economy shrank 50% and began doing so in August of 1929. When this started there was no help from the government, there was no money and, therefore, no initiative to put programs in place to deal with the lack of jobs and homelessness.
