Two recording devices, Two recording devices are set 3400

Two recording devices

Reference no: EM13201426

Two recording devices are set 3400 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 400 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation?

Reference no: EM13201426

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