Solve the Problem. -Two Recording Devices Are Set 2,800 Feet Apart, with the Apart

question 136

Multiple Choice

Solve the problem.
-Two recording devices are set 2,800 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?

• A) 430.77 feet
• B) 5562.37 feet
• C) 1142.61 feet
• D) 1486.61 feet

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