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Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina’s voice was changed by what type of energy?
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Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina’s voice was changed by what type of energy?

User Shollyman
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2 Answers

6 votes

C.) Electric Energy

User Iamthestreets
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2 votes
The loudness was increased by the amplifier which converted electrical energy into sound energy.
User Allinonemovie
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