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Steel ruptures when a shear of3.5xx10^(8...

Steel ruptures when a shear of`3.5xx10^(8)Nm^(-2)` is applied. The force needed to punch a `1 cm` diameter hole in a steel sheet `0.3 cm` thick is nearly:

A

`1.4 xx 10^4N`

B

`2.7 xx 10^4N`

C

`3.3 xx 10^4N`

D

`1.1 xx 10^4N`

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