20. (a) make a diagram showing the nine abdominopelvic
regions, and name each region. name two organs (or parts
of organs) that could be located in each of the named
regions. (b) make a similar sketch illustrating how the
abdominopelvic cavity may be divided into quadrants, and
name each quadrant.

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

What are chlorofluorocarbons and what impact do they have on the atmosphere?

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.