PHY 2020 Chapter Notes - Chapter 13: Surface Tension, 8N, Capillary Action
Document Summary
Pressure is a force divided by the area over which the force is exerted: pressure= force/ area. Figure 13. 2: physics sara bloomberg lies without harm on the bed of nails because her weight is distributed over hundreds of nails, which males the pressure at the point of each nail safety small. The pressure a liquid exerts depends on its depth. The pressure of a liquid also depends on the density of the liquid: liquid pressure= weight density x depth. Liquid are practically incompressible; that is, their volume can hardly be changed by pressure. So, except for small changes produced by temperature, the density of a particular liquid is practically the same at all depths. The total pressure a liquid, then, is weight density multiplied by depth plus the pressure of the atmosphere. It is important to recognize that the pressure does not depend on the amount of liquid present. Volume is not the key- depth is.
