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lara31 [8.8K]
2 years ago
15

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?
Chemistry
1 answer:
pav-90 [236]2 years ago
8 0
Sorry can’t help

Jxjskbo
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