13 (a) Define pressure and write its formula and SI unit
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Pressure is defined as the physical force exerted on an object. The force applied is perpendicular to the surface of objects per unit area. The basic formula for pressure is F/A (Force per unit area). Unit of pressure is Pascals (Pa). Types of Pressures are Absolute, Atmospheric, Differential, and Gauge Pressure.
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Pressure is defined as force applied by unit area
S.I unit is Pascal or Newton per meter sq
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