At a constant temperature, the gas pressure has no effect on the speed of sound, since the density will increase, and since pressure and density (also proportional to pressure) have equal but opposite effects on the speed of sound, and the two contributions cancel out exactly.
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nazarilpearl
Temperature: The speed of sound is directly proportional to the square root of absolute temperature. Humidity: The speed of sound increases with the increase of humidity. We can see that in the above stated factors pressure is missing, so pressure is the factor which does not affect the sound.
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Answer:
D. Temperature
Explanation:
At a constant temperature, the gas pressure has no effect on the speed of sound, since the density will increase, and since pressure and density (also proportional to pressure) have equal but opposite effects on the speed of sound, and the two contributions cancel out exactly.