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a 40 kg boy whose leg bones are 4 square cm in area and 50 cm long falls through a height of 2m without braeking his leg bones.If the bones can stand a stress of 0.9*10 power 8 N/sq meter,then the strain is

a 40 kg boy whose leg bones are 4 square cm in area and 50 cm long falls through a height of 2m without braeking his leg bones.If the bones can stand a stress of 0.9*10 power 8 N/sq meter,then the strain is

Grade:9

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