A steel wire of diameter 1 mm can support a tension of 0.24 kN. Suppose you need a cable made of these wires to support a tension of 20 kN. The cable should have diameter of what order of magnitude?( with     cm ) I know the last relation d2 = d1 (f2 /f1)^0.5 d2= 9.12  mm d2 = 0. 9  cm    hence the order of magnitude  is  10^zero  that correct or error

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A steel wire of diameter 1 mm can support a tension of 0.24 kN. Suppose you need a cable made of these wires to support a tension of 20 kN. The cable should have diameter of what order of magnitude?( with     cm )

I know the last relation

d2 = d1 (f2 /f1)^0.5

d2= 9.12  mm

d2 = 0. 9  cm   

hence the order of magnitude  is  10^zero  that correct or error

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