^General

^General

QUANTITY SYMBOL DEFINITION/RELATION SI UNITS DIMENSIONS
Mass M or m Also called inertia. kg [M]
Area A or S Region bounded by lines or curves in 2D. M2 [L2]
Volume V Space bounded by lines or curves in 3d. m3 [L3]
Density r Mass per unit volume kg m – 3 [ML – 3]
Linear density m Mass per unit length kg m – 1 [ML – 1]
Surface density s Mass per unit area kg m – 2 [ML – 2]
Specific volume 1/r Volume per unit mass kg – 1 m 3 [M – 1 L3]
Number density n Number of particles per unit volume. m– 3 [L– 3]
Specific gravity Or relative density SG density of body /density of water at 4 0C no units no dimensions

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