To calculate how much rest energy an object contains, you multiply a. its mass times its velocity. b. the force on it times the length of time the force acts. c. its mass times its acceleration. d. its mass times the speed of light squared. e. one

What are the applications of electromagnetic waves

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.

What is the difference between mass density and weight density?