A ship is anchored in a bay. The echo of the ship's foghorn, reflected from an iceberg, is heard 5.0 seconds after the horn is sounded. The temperature of the air is -10.0 degrees Celsius. How many meters away is the iceberg? Show your work.

Question

A ship is anchored in a bay.  The echo of the ship's foghorn, reflected from an iceberg, is heard 5.0 seconds after the horn is sounded.  The temperature of the air is -10.0 degrees Celsius.  How many meters away is the iceberg?  Show your work.

Henry · Answer

Vs = 332 + 0.6*(-10) = 326 m/s = Velocity of sound. d = Vs * t/2 = 326 * 5/2 = 815 m.