Two in-phase loudspeakers emit identical 1000 Hz sound waves along the x-axis.What distance should one speaker?

Two in-phase loudspeakers emit identical 1000 Hz sound waves along the x-axis.What distance should one speaker be placed behind the other for the sound to have an amplitude 1.70 times that of each speaker alone

think of of a sine wave (only draw the graph out) and stare at it till you comprehend that the area between a optimum at +a million and the minimum at -a million is one 0.5 of the finished wavelength. you comprehend that this distance between the optimum and the minimum is (sixty 4.0 cm – 24.5 cm), that’s sort of forty cm. via fact that that’s one 0.5 of the wavelength, the finished wavelength would desire to be 80 cm = 0.8 m. do no longer write out a mathematical formula in physics except you comprehend what it potential; via fact an expertise of what the difficulty is calling is often greater considerable than an expertise of what formula you need to use. at times, as in this time, you are able to only think of with regard to the geometry till a answer grants itself.

Two in-phase loudspeakers emit identical 1000 hz sound waves along the x-axis.