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Собака массой 20 кг бежит со скоростью 7 м/с. Найдите кинетическую энергию собаки

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oksana77768

490 Дж

Объяснение:

Ek = m×V²/2 = 20 × 49/2= 490 Дж

доказательство размерности: [Дж] = кг × м²/с² = Н×м = Дж

maryshecka

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Must Waste More Time...


Дано: U₁=15V, I₂=50мА, U₃=30V, R1=1000 , R₂=700 , R₃=500 Знайти: P₁₂ , Ii , Ui , Pu₁ ?
arutchevben64

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Must Waste More Time...


3. 200 грам ВОДЫ при температуре 15 °С смешали с 300 грамм водой при температуре 90°с. Найдите устан

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