Answer:
What was the Reconstruction era? The Reconstruction era was the period after the American Civil War from 1865 to 1877, during which the United States grappled with the challenges of reintegrating into the Union the states that had seceded and determining the legal status of African Americans.
Explanation:
understand mark me as brainliest
It is recognised that the retention of heritage buildings has environmental sustainability benefits. Conserving heritage buildings reduces energy usage associated with demolition, waste disposal and new construction, and promotes sustainable development by conserving the embodied energy in the existing buildings.
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.
Learn more about Boundary Layer Thickness on:
brainly.com/question/15344498
#SPJ4
Answer:
This question lacks options, options are:
a) Intensive Interview
b) experiment
c) field research
d) surveys
The correct answer is c.
Explanation:
Field research is the set of actions aimed at directly obtaining new data from the primary sources of information of people in the place and time in which the facts or phenomenon of interest for the investigation occur. The objective of the field work lies in the identification of the theory in the place where the studied phenomenon unfolds, that is, it implies the observation of the development of variables or uncontrolled factors, therefore, close to reality and qualitative.
