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    4. what makes sounds louder
    what makes sounds louder

    energy waves

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    0  Views: 467 Answers: 4 Posted: 14 years ago
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      4 Answers

      An amplifier

      14 years ago. Rating: 2
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        A hearing aid?

        14 years ago. Rating: 1
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          turn up the volume..

          14 years ago. Rating: 1
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            An Ear trumpet

            14 years ago. Rating: 1
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