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 Abbreviated list of quantities, units and symbols in physical chemistry

4.1 physical quantities: space and time

 Physical Quantity Symbol SI Unit
Cartesian space coordinates x, y, z m
 position vector r m
 length l m
height h m
thickness, distance d, d m
radius r m
diameter d m
path, length of arc s m
area A, As, S m2
volume V m3
plane angle a, b, g, q, f 1, rad
solid angle w, W 1, sr
time t s
frequency v, f Hz
angular frequency (=2pv) w s-1, rad s-1
characteristic time interval, relaxation time, time constant t, T s
velocity v, u, w, c m s-1
acceleration a m s-2


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