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May 15, 2020 · Water control layers are typically water repellant materials (building papers, house wraps, rigid insulations, fluid applied coatings, fully adhered membranes, sheet goods) located behind the cladding and are designed and constructed to drain the rainwater that passes through the cladding.
Water has very strong intermolecular forces, hence the low vapor pressure, but it's even lower compared to larger molecules with low vapor pressures. Viscosity is the property of fluid having high resistance to flow.
Surface tension is the propery of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules. Since these forces vary depending on the nature of the liquid (i.e. water vs. gasoline) or solutes in the liquid (surfactants like detergent), each solution exhibits differing surface tension properties.
Water is transported in plants through both cohesive and adhesive forces; these forces pull water and the dissolved minerals from the roots to the leaves and other parts of the plant. Key Terms adhesion : The ability of a substance to stick to an unlike substance; attraction between unlike molecules
This results in a negative electrical charge near the oxygen atom (due to the "pull" of the negatively charged electrons toward the oxygen nucleus) and a positive electrical charge near the hydrogen atoms. A difference in electrical charge between different parts of a molecule is called polarity.
Among common liquids, water exhibits a distinctly high surface tension due to strong hydrogen bonding between its molecules. As a result of this high surface tension, the surface of water represents a relatively “tough skin” that can withstand considerable force without breaking.
Jul 12, 2019 · Viscosity (η) is the resistance of a liquid to flow. Some liquids, such as gasoline, ethanol, and water, flow very readily and hence have a low viscosity. Others, such as motor oil, molasses, and maple syrup, flow very slowly and have a high viscosity.
