Предмет: Физика, автор: mazepaolga54

По капіляру піднімається вода і зупиняється через певний час. Визначте об'єм води, який зміг піднятися по капіляру, якщо діаметр капіляра дорівнює 0,2 мм, поверхневий натяг води дорівнює 0,0728 Н/м.​

Ответы

Автор ответа: Vika26206
0

Відповідь:

V=8, 7×10^-5 м^3

Пояснення:

 V=п r^2h=пdh g=10 м/с^2

 h=2a/prg p=1000кг/м^3=10^3

r=d/2=0, 1мм

h=2×0, 0728/10^3×0, 1×10= 0,0001456=1, 4×10^-4

V=п dh

V= 3,14×0, 2×1, 4×10^-4=0, 628×1, 4×10^-4=0, 8792×10^-4=8, 792×10^-5 л=8, 7×10^-5м^3

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