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einsteindude einsteindude
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Posts: 5058
9 years ago
What is an echo, and why is it weaker than the original sound?
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
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bSharpbSharp
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9 years ago
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9 years ago
Super! Don't forget to mark my post as best answer Grinning Face
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