Determine the diameter of a clean glass tubing so that the rise of water at 20oC due to capillary action is less than h = 1.00mm. The surface tension (σ) of water at 20oC = 0.0735N/m and the specific weight of water = 9.81kN/m3.

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?