Pressure - The amount of force or thrust acting perpendicular on a surface of area of one square meter of body., SI- unit of pressure - PASCAL, Pressure = - P = F/A, Atmospheric pressure - The amount of force or weight of the atmospheric air that acts downward on unit surface area of the surface of the Earth., Barometer - Toricelli, Buoyant Force - The upward force that is exerted by water on a floating or a partly submerged body., Surface tension - Property of liquid in which the molecules of a liquid experience a force, which contracts the extent of their surface area as much as possible , so as to have the minimum value., SI- unit of viscous force - Poise, Scuba diver - Special suits, Ship of desert - Camel,

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