Вопрос школьника по предмету Физика
Скільки часу потрібно, щоб за допомогою насоса, потужність якого 50кВт, відкачати з шахти 500 м3 води? Глибина шахти 200 м
Ответ учителя по предмету Физика
Ответ:
Дано:
H=200 м;
V=500 м3;
N=50 кВт=50000 Вт;
p=1000 кг/м3;
g=10
Н/кг t=?
Рішення
N=A/t A=mgh m=pV = > N = (pVgt) / t = > t = (pVgh) / N t = (1000*500*10*200) / 50000=20000c=5,555 ч =5,6 ч
Объяснение:
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