Can you describe your own perspective whats Physical Science all about? PLS GUYS HELP

How would doubling the made of an object change the objects potential energy

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.

Describe cytokinesis in plants and animals. in animals: in plants.