Knowledge

485:"}},"text\/plain":{"en":{"":"inception"}}},"{\"value\":{\"time\":\"+2016-11-17T00:00:00Z\",\"timezone\":0,\"before\":0,\"after\":0,\"precision\":11,\"calendarmodel\":\"http:\\\/\\\/www.wikidata.org\\\/entity\\\/Q1985727\"},\"type\":\"time\"}":{"text\/html":{"en":{"P571":"17 November 2016"}},"text\/plain":{"en":{"P571":"17 November 2016"}}}}": --> 182: 309: 193: 67: 321:"}},"text\/plain":{"en":{"P2093":"Illustr","P4174":"Illustr"}}},"{\"value\":{\"entity-type\":\"property\",\"numeric-id\":4174,\"id\":\"P4174\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"":" 121:Изменение поперечного сечения канала в форме равнобедренной трапеции в зависимости от угла откоса ѱ. Смоченный периметр выделен синим. Площадь трапеции постоянна и равна 2, её высота постоянна и равна 1. Справа вверху показан график изменения смоченного периметра (P) в зависимости от угла откоса (ѱ). Минимум смоченного периметра достигается при угле откоса равном 60°. Создано в Maple. 441:"}},"text\/plain":{"en":{"":"copyright license"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":18199165,\"id\":\"Q18199165\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P275":" 397:"}},"text\/plain":{"en":{"":"copyright status"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":50423863,\"id\":\"Q50423863\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P6216":" 523:"}},"text\/plain":{"en":{"":"source of file"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":66458942,\"id\":\"Q66458942\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P7482":" 313:"}},"text\/plain":{"en":{"":"creator"}}},"{\"value\":{\"entity-type\":\"property\",\"numeric-id\":2093,\"id\":\"P2093\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"":" 519: 38: 234:– You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. 318: 524: 442: 398: 654: 520: 394: 322: 314: 482: 438: 310: 445:"}},"text\/plain":{"en":{"P275":"Creative Commons Attribution-ShareAlike 4.0 International"}}}}": --> 159: 550: 468: 424: 130:(P) as a function of angle ѱ is shown. Minimum of the wetted perimeter is attained when ѱ is equal to 60°. 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