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  • Pressure: Understanding Force Per Unit Area - Definition & Units
    The force measured over an area is pressure.

    Here's the breakdown:

    * Force: A push or pull that can cause an object to accelerate or deform.

    * Area: The amount of surface covered by an object.

    Pressure is defined as the force applied perpendicularly to a surface per unit area. Mathematically, it is expressed as:

    Pressure (P) = Force (F) / Area (A)

    Units of pressure:

    * Pascal (Pa): 1 Pa = 1 N/m²

    * Pound per square inch (psi)

    * Atmosphere (atm)

    Examples:

    * The pressure of a gas in a container is the force exerted by the gas molecules on the walls of the container, divided by the area of the walls.

    * The pressure in a tire is the force of the air inside the tire pushing against the inner surface, divided by the area of the tire's inside.

    Important Note: Pressure is a scalar quantity, meaning it only has magnitude and no direction.

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