When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in one second?
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We want to find how many kilometers sound will travel when the air is at 68 degrees in five seconds. Step 1: Multiply 343 by five. (1 sec. to 5 secs.) 1715/1000 = 1.715 km/5 secs.
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Answer:
1 km = 1000m
343m = 343/1000 km
= 0.343
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