Nutrients dissolved in water are carried to upper parts of plants by tiny tubes partly because of the capillary effect. determine how high the water solution will rise in a tree in a 0.0026-mm-diameter tube as a result of the capillary effect. treat the solution as water at 20°c with a contact angle of 26°. the surface tension of water at 20°c is σs = 0.073 n/m. take the density of water to be 1000 kg/m3.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.