What observation was simpler to explain with the heliocentric model than with the geocentric model

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

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.

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?