Question: Seismic exploration identifies underground phenomena, such as caves, oil pockets, and rock layers, by transmitting sound into the earth and timing the echo of the

Seismic exploration identifies underground phenomena, such as caves, oil pockets, and rock layers, by transmitting sound into the earth and timing the echo of the vibration. From a sounding at point A, a "thumper" truck locates an underground chamber 7 km away. Moving to point B, 5 km from point A, the truck takes a second sounding and finds the chamber is 3 km away from that point. Assume that the underground chamber lies in the same vertical plane as A and B. What more can you say about the location of the underground chamber?

3 km

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