Question

Part A You are standing 2.5 m directly in front of one of the two loudspeakers shown in the figure. They are 3.0 m apart and both are playing a 686 Hz tone in phase. (Figure 1) As you begin to walk directly away from the speaker, at what distances from the speaker do you hear a minimum sound intansity? The room temperature is 20 C Express your answer numerically using two significant figures. If there is more than one answer, enter your answers in ascending order separated by commas Submit My Answers ive LUp Provide Feedback af 1 Walk 25 m 3.0 m

My answers were 2.9, 5.6, 17,

but it keeps saying that the first term is wrong and that I should check significant figures. Help??

Answer 1

nt [2n-1]h Now ik a Guusfion qaludalusnel. Muwulun На ajno air akie NTP a に221 m/s Vo

Ke 273.15 T: 20+2千3-151c T= 29 3.15k ha bili tuang tu vain 275 15 2 3-15 V342. mls λ= 342.9 66c 0.514 86 M 2- [2n4)0.51486 - J or n ('26)-|)0. SI y 86 Thus al- n-, 2,