Which of the following statements is true about the speed of sound
A.Sound travels at a constant speed even if air temperature changes.
B. When comparing two media with the same phase, the sound will travel faster in a denser material
C. Sound travels faster in dry air than in wet air.
D. Molecules move faster so sound travels faster in warmer air.
A.Sound travels at a constant speed even if air temperature changes.
B. When comparing two media with the same phase, the sound will travel faster in a denser material
C. Sound travels faster in dry air than in wet air.
D. Molecules move faster so sound travels faster in warmer air.
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B po ang answer
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