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A water column of 0.07 N/m, zero contact angle, in a 0.5 mm radius tube rises how high? Take g = 10 m/s^2.
A1.4 cm
B5.6 cm
C2.8 cm
D0.7 cm
Answer & Solution
Correct answer: C. 2.8 cm
Height h = 2S cos(theta)/(rho g a) = 2 x 0.07 /(1000 x 10 x 0.0005) = 0.028 m, or 2.8 cm.
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