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Not all sound that hits matter is absorbed. Some of it is reflected. That means sound bounces off the solid matter the way a tennis ball bounces off a wall. Sound reflected back to its source is an echo.
Wiki User
∙ 13y ago
Wiki User
∙ 6y agoGrounding would be more appropriate
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Can all threads be in focus again using the high-power objective if a certain thread is focused using control knob?
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Using the word monoliths in a sentence?
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