Question

Question: Two sources, S, and we spaced a distance 21. apart wher 1 .17 m Figure 1). They emit sound waves isotropically and in phase, each with a power P-41.2 W. A wall is a distance Laway from the sources. There is a hole in the wall halfway between the two sources with a cross-sectional area A = 27.0 cm and out of 1.00 S2 Figure 1: Schematic of two sound sources, S, and S. spaced a distance 21. Apart, amitting sound waves isotropically and in phase. A walis distance Laway from the sources and there is a hole in the wall away between the two souroes with a cross-sectional area Part 1) Initially only one source S.. is on What is the intensity of W/m at the hole in the wall? = Part 2 When only sources, is on, what is the rate of energy flow, power, through the hole in the wall? is given by S. What is the amplitude of the resultant wave when both speakers are on at the hole? Give an expression in Part 3 The amplitude of the wave from one of the speakers at a distance terms of Se Shake S Check

Answer 1

o sol?? L=107M A = 27*210-4 m2 # Hole FIA P= 41-2W → Siz Veh? = 122 Ô Talensity at hole ( 19 = La sia hot news ) = {1-197 what they ② Rate of energy fino through the hole P = {1, xulxen) = (2-192 X 27 X164) 1P = 32. 33x10-4w7 2 Amplitude of sound at hole a 4 / 2 Ape giren. Amplitude distance = f " Intensity of sound at hole a so Now Se = / Ampletade of sound at hole a 4 Total Amplitude of sound at hole from both sources . Shore & 1 5 1 2 2 + 2 ) X2 4 S hole = 1281)