{2] Two loudspeakers facing each other are driven a: phase with each other by an audio amplier at a frequency of 1a] Ha. One loudspeaker delivers 2 .93 times as much acoustic power as the oil1er.l_et's retend that we can treat the waves trom either of the speakers as plane waves {whose amp 'tude does not decay as the distance from the speaker increases}. When a woman walks along a line joining the two speakersI she hears the sound mtensity vary periodically between In and I,\"r1 as her location changes. Take the speed of the sound to be 340 m,\" s. {a} Is re midpoint between the two speakers the location of a minimum or a maximum sound intensity? [Give brief explanation or you will receive no credit}. {b} What is the distance between a pair of adjacent maximum and the minimum in sound levels? [cl What is the ratio In\"! I\"? Ed} What is the maximum variation in the sound level, measured in dB, along the line connecting the two speakers