1.

To determine the volume expansion coefficient of kororone, one end of a U-tube filled with it was held at 10^@C,and the other at 80^@C. The level of liquid in one tube was 280 mm and in the other 300 mm. Find the coefficient.

Answer»


Solution :The CONDITION for the EQUILIBRIUM of a fluid in communicating vessels (Fig.) is `p_1 = p_2 or rho_1 h_1 g = rho_2 h_2 g`. But `rho = rho_0//(1 + BETA t)`, whence
`(h_1)/(1 + beta t_1) = (h_2)/(1 + beta t_2) , beta = (h_2 - h_1)/(h_1 t_2 - h_2 t_1)` .


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