What is the relationship of lift, drag, thrust, and weight when the airplane is in straight-and-level flight?

The angle between the chord line of an airfoil and the relative wind is known as the angle of

Angle of attack is defined as the angle between the chord line of an airfoil and the

The amount of excess load that can be imposed on the wing of an airplane depends upon the

What causes an airplane (except a T-tail) to pitch nosedown when power is reduced and controls are not adjusted?