http://rsokolov.livejournal.com/ ([identity profile] rsokolov.livejournal.com) wrote in [personal profile] seminarist 2017-03-03 05:01 am (UTC)

Нет, скорость истечения песка не зависит от его количества, а зависит только от соотношения диаметра отверстия и размера песчинок. В этом состоит отличие сыпучих материалов от жидкости.
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