What is the definition of Constructive Interference? plz help TvT 1: When two interfering waves line up, two crests and two troughs overlap. Increased amplitude.
2: The bending of waves as they pass through openings or around corners
3: When two interfering waves are in the opposite direction, crest and trough overlap. Zero amplitude.

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl, max are applied?

Argon, neon, and xenon are examples of

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.