The Speed of Sound Through the Ground Is About 6

question 277

Multiple Choice

The speed of sound through the ground is about 6.0 km/s while the speed of sound in air is 343 m/s. A very powerful explosion occurs some distance away and you feel the ground vibrate 60
Seconds before you hear the sound of the explosion. How far away is the explosion?

• A) 22 km
• B) 27 km
• C) 30 km
• D) 25 km
• E) 20 km

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