Which one of these formulas are used to solve for T (time), and how?
(resent)

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 happens when the number of protons in an atom changes

Each line (unit) on the horizontal axis represents: 5 years 10 years 20 years all of the above