A square has a side of length L = 0.75 m. An observer O is stationed at one corner. Two loudspeakers are located at corners of the square, as shown. The speakers produce the same single-frequency tone and are in phase. The speed of sound is 343 m/s. (a) Find the single smallest frequency that will produce constructive interference for observer O. (b) Find the single smallest frequency that will produce destructive interference for observer O. (c) Repeat (a) and (b) with the new location of the speakers shown in the second figure.

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Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.