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Revision notes on 4.2.2 Pressure for the CIE A Level Physics syllabus, written by the Physics experts at Save My Exams.
Basic Definition. Pressure (P): Defined as the force (F) applied perpendicularly to a surface divided by the area (A) of that surface, P = F/A. SI Unit: The standard unit for pressure is the Pascal (Pa), equivalent to one Newton per square meter (N/m²). Calculating Pressure.
Pressure refers to the force applied per unit area. It measures how much force is distributed over a given surface area. Related terms. Pascal's Principle: States that when pressure is applied to an enclosed fluid, it is transmitted equally in all directions.
Define pressure. Explain the relationship between pressure and force. Calculate force given pressure and area. The information presented in this section supports the following AP® learning objectives and science practices:
Pressure is the amount of force applied perpendicular to the surface of an object per unit area. The symbol for it is "p" or P. [2] The IUPAC recommendation for pressure is a lower-case p. [3] . However, upper-case P is widely used.
Pressure is the ratio of the force applied to the area over which it is exerted. A solid in contact with a fluid experiences a force all over its outer surface. chaos
Pressure is defined as force per unit area. It is usually more convenient to use pressure rather than force to describe the influences upon fluid behavior. The standard unit for pressure is the Pascal, which is a Newton per square meter.
