18. A manometer is attached to a tank containing three different fluids as shown. What will be the difference in elevation (y) of the mercury column in the manometer? Elev. 6 m Ele v.5m Elev. 2 m Elev. m Air pressure= 30 kPa Oil (s.g=0.82) Water 1.00 m Mercury (s.g. - 13.6)

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Dimensional homogeneity

The term dimensional homogeneity means that in an equation, the dimensions of each term on both sides are equal, which means the dimensions of the left-hand side (LHS) of an equation are similar to the dimensions of the right-hand side (RHS). For a dimensionally homogeneous equation, the powers of fundamental dimensions will be identical on both sides of the equation.