A point source of sound is located somewhere along the x-axis. Experiments show that the same wave front simultaneously reaches listeners at x = -8 m and x = +2.0 m. A third listener is positioned along the positive y-axis. What is her y-coordinate (in m) if the same wave front reaches her at the same instant as it does the first two listeners?
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Question

A point source of sound is located somewhere along the x-axis. Experiments show that the same wave front simultaneously reaches listeners at x = -8 m and x = +2.0 m. A third listener is positioned along the positive y-axis. What is her y-coordinate (in m) if the same wave front reaches her at the same instant as it does the first two listeners?

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G1 Physics · Accepted Answer

Step 1: Identify the governing wave relation from the data and preserve the stated boundary/phase conditions. Step 2: Substitute the numerical values with SI units and simplify. Step 3: Compare with the keyed result from the source. Final: A: 4.