Two beams of coherent light start out at the same point in phase and travel different paths to arrive at point p. if the maximum destructive interference is to occur at point p, what correctly describes the path difference of the two beams?

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Which feature indicates that mars resides in the inner region of the solar system

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?