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sample

1–1. Represent each of the following quantities with
combinations of units in the correct SI form, using an
appropriate prefix: (a) mm # MN, (b) Mg>mm, (c) km>ms,
(d) kN>(mm)2.

SOLUTION
a) mm # MN = (10 – 3 m)(106 N) = 103 N # m = kN # m Ans.
b) Mg>mm = (106 g2 >(10-3 m2 = 109 g>m = Gg>m Ans.
c) km>ms = (103 m)> 110 – 3 s2 = 106 m>s = Mm>s Ans.
d) kN> 1mm22 = (103 N2 >(10-3 m)2 = 109 N>m2 = GN>m2 Ans.