an object weighs 200gf in air and 170gf when completely immersed in water. calculate a)loss in weight of object b)buoyant force on object.

Identify the type of synthetic material used in each object

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

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.