Предмет: Физика, автор: senyakozlovski

подъемный кран поднял железобетонную плиту массой 2,7 т на 7 этаж (высота 28 м). определите совершенную работу.

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Автор ответа: tana20101997

0

A=m*g*h=2700*10*28=756 000 Дж=756 кДж

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