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Health, 12.06.2020 15:57 ninjaerik4
After school, Angelique attends a concert with her friends. The concert lasts two hours, and the volume is 120 decibels. To safely watch the concert, approximately how many decibels must her earplugs block?
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After school, Angelique attends a concert with her friends. The concert lasts two hours, and the vol...
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