Answer: They both reinforce, contradict.
Explanation:
Language development and cognition are together when considering a child's development. The fact that a child would learn anything at all including language will have to do with their cognitive ability. Stronger language skills means strong cognitive skills and vice versa, they work with each other
Answer:
The answers are 2,3, and 4
Explanation:
Correct on edge!!
The thickness up to which the velocity approaches 99% of the free stream velocity. The distance measured perpendicular to the boundary by which the free stream is displaced on account of the formation of the boundary layer.
<h3>What is displacement thickness in boundary layer theory?</h3>
The displacement thickness for the boundary layer is defined as the distance the surface would have to move in the y-direction to reduce the flow passing by a volume equivalent to the real effect of the boundary layer.
The thickness of the boundary layer represented by δ is arbitrarily defined as that distance from the boundary surface in which the velocity reaches 99% of the velocity of the mainstream.
To learn more about boundary layer theory visit the link
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