we describe sound waves in terms of pressure. given this, for a standing wave in a tube open at each end, the open ends of the tube are .

Which describe reflection? check all that apply. light bounces off a boundary.

How would a small bar magnet be oriented when placed at position x?

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?