| 31. | That time delay is due to the finite speed of sound.
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| 32. | The missile can fly at 2.8 times the speed of sound.
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| 33. | The speed of sound is raised by humidity but decreased by carbon dioxide.
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| 34. | "Flying at twice the speed of sound gives you a buzz, " he said.
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| 35. | Halfway between them is a field where light slows to the speed of sound.
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| 36. | The speed of sound is five times greater in water than in less-dense air.
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| 37. | Where ? is the speed of sound in the material.
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| 38. | This greatly reduces the speed of sound in the liquid.
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| 39. | Corrections were made for conditions affecting the speed of sound.
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| 40. | An airplane traveling at the speed of sound, then, is traveling at Mach 1.
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