Предмет: Физика, автор: qazaqbatyryxan

Помогите пожалуйста 50 баллов дам

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Автор ответа: kamil240486

Ответ:

Объяснение:

η =(Wп/A)*100%

Wп=mgh

A=UIt

η =(mgh/UIt)*100%

I =(mgh/Uηt)*100%

I=(100 кг*10 Н/кг*3 м/380 В*90*10 с)*100%=(3000 Н*м/342000 В*с)*100%=0,877 А

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