Homework Help: physics

Posted by john on Saturday, November 6, 2010 at 11:11pm.

If the ultimate shear strength of steel is taken to be 2.00 109 Pa, what force is required to punch through a steel plate 1.60 cm thick? Assume the superhero's fist has cross-sectional area of 1.20 102 cm2 and is approximately circular. answer in Newtons

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