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Speed of sound in air is roughly:

A340 m/s
B3400 m/s
C34 m/s
DSpeed of light
Answer & Solution
Correct answer: A. 340 m/s
At room temperature, sound travels at about 340 m/s in air. (Exact value depends on temperature — higher at warmer temperatures.) For comparison, speed in steel is ~5000 m/s; in water ~1500 m/s.
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