The greatest length of a steel wire that can be hung vertically without breaking (breaking stress for steel = 7.9 xx 10^(8) N/m, density of steel wire = 7.9 xx 10^(3) kg//m^(3))

The greatest length of a steel wire that can be hung vertically withou

1.	The greatest length of a steel wire that can be hung vertically without breaking (breaking stress for steel = 7.9 xx 10^(8) N/m, density of steel wire = 7.9 xx 10^(3) kg//m^(3))
Answer» `9xx10^(9)m` `10^(4)m` `10^(3)m` `10^(2)m` SOLUTION :LENGTH`=("Breaking stress")/("density" xx g)` `=(7.9xx10^(8))/(7.9xx10^(3)xx10))=10^(4)m` So the correct choice is (B).

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The greatest length of a steel wire that can be hung vertically without breaking (breaking stress for steel = 7.9 xx 10^(8) N/m, density of steel wire = 7.9 xx 10^(3) kg//m^(3))

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