Предмет: Физика, автор: Gp37646

В студии звукозаписи, в целях защиты от внешних шумов на стену повесили ковер в два слоя. Во сколько раз уменьшится здесь шум?

Ответы

Автор ответа: zenindanil58

83

Ответ:

Объяснение:

В 2,5 раза

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