t=20 c h=10 м F=5000 H N=?
N=F*v=F*h/t=5000*10/20=2500 Вт (2,5 кВт)
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t=20 c h=10 м F=5000 H N=?
N=F*v=F*h/t=5000*10/20=2500 Вт (2,5 кВт)
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