an airplane wing of 3m chord length moves through still air at 15C and 101.3 kpa at a speed of 320 km/h. a 1:20 scale model of this wing is placed in a wind tunnel and dynamic similarity between a model and a prototype is desired. What velocity is necessary in a variable-density wind tunnel where absolute pressure is 1400 kpa and temperature is 15 c

x+2 because it just doubles hon so the pattern can actually tell you the expression.

so for example,

if x=2 then 2+2 is 4

if x=4 then 4+4 is 8

and so on and so forth.

i really hope that this makes sense and you out in a way hon: )

answer:

design model: consists of design geometry; can be 2d or 3d; typically has a black background.

design files: drawing created with microsoft expression design, a drawing and design program for windows; may contain both vector and raster graphics; can also include multiple layers and various image effects.

elements: an element is a single part of a larger group.