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Miheevf
Miheevf
13.07.2020 12:39 •  Физика

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

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Ответ:
valu49
valu49
13.07.2020

490 Дж

Объяснение:

Ek = m×V²/2 = 20 × 49/2= 490 Дж

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

4,4(15 оценок)
Открыть все ответы
Ответ:
Aynur123455
Aynur123455
13.07.2020

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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 ?
4,8(51 оценок)
Ответ:
n1kitat
n1kitat
13.07.2020

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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
4,6(84 оценок)
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