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Автор - lilia110720011

Задача 11
Помогите решить пожалуйста)

Ответ

Проверено экспертом

Автор - MashaPutnaj
дано V=250 см3=2,5*10^-4 м3    p=1,1 кг/м3    v=600 м/с     E- ?

m=p*V=2,5*10^-4*1,1=2.75*10^-4 кг

E=m*v^2/2=2.75*10^-4*36*10^4/2=49.5 Дж

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