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Which factor determines if you'll hear an echo of your voice half of a hard surface? A--your mass. B-temperature of the wall c--your height D-your distance from the wall
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Which factor determines if you'll hear an echo of your voice half of a hard surface? A--your mass. B-temperature of the wall c--your height D-your distance from the wall

User Sprksh
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Answer:

D

Step-by-step explanation:

User R Balasubramanian
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