Предмет: Физика, автор: diana582128

За какое время трактор с мощностью двигателя 75 кВт выполнит работу 540 МДж?

diana582128: ПОЖАЛУЙСТА ПОМОГИТЕ!!!!!! СРОЧНО ПОЖАЛУЙСТА ПОМОГИТЕ!!!!

Ответы

Автор ответа: loloshkafadir

Ответ:

2 часа

Объяснение:

Привет), с радостью тебе помогу. Переведем все в СИ 75Квт=75000вт

540Мдж=540000000Дж, теперь найдем время t=N\A=75000вт\540000000дж=7200с или 2часа

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