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Unute

Ответ:

F=pgv

m=pV

V=m/p

V=0,5кг/7900 кг/м3=3950м3

F=820 кг/м3•9,8 H/кг•3950м3=31,742,200H=31,7мH

ответ: ≈31,7 мH

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