Предмет: Физика, автор: Soalqlqlql

Школьник, перемещая равномерно по наклонной доске груз массой 1 кг, приложил силу 5,4 Н. Каково значение КПД конструкции, если длина доски 0,9 м и высота над горизонтальным уровнем 0,2 м? (Принять g≈10Нкг).

У меня 9 минут до завершения работы!!(

Ответы

Автор ответа: neeek650

Ответ:

n=Аполезная/Апотраченная

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