Write a few sentences comparing three different kinds of circuits: complete, open, and short circuits.

Which describe reflection? check all that apply. light bounces off a boundary.

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?