Ответ:
N=A/t
A=F*h=mg*h=2400*10*100=2400000Дж
N=2400000/120=20000Вт
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Ответ:
N=A/t
A=F*h=mg*h=2400*10*100=2400000Дж
N=2400000/120=20000Вт