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Mathematics

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Школьник поднял гирю весом 16 кг на высоту 2,1 м за 2 с. Определите:
а) Механическую работу, выполненную школьником;
б) Механическую мощность, развитую им;
в) На сколько увеличилась при этом потенциальная энергия си-
стемы „гиря-земля". Считать g = 10 Н/кг.
ОЧЕНБ ОЧЕНЬ СРОЧЬНО НАДО. ПОМОГИТЕ ПОЖАЛУЙСТА ЩЯС.

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what type of language is this isn't this India?

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Решение: A=mgh

A=16*10*2,1=336Дж N=A/t

N=336:2=168Вт Еп=mgh Еп=16*10*2,1=336Дж

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