How does the intensity of a sound wave change if the distance from the source increases by a factor of 2?
A. The intensity increases by a factor of 4
B. The intensity decreases by a factor of 4
C. The intensity decreases by a factor of 2

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

From the perspective of an employee that effective channeling of work related information and concerns

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?