An accepted value of KIc is obtained from a fracture test where the fracture surface is _________ to the tensile loading direction.
Fill in the blank(s) with the appropriate word(s).
perpendicular or normal
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If Burl carried Paul piggy-back while standing in the middle of a scaffold, the tensions in the two supporting ropes would
A) cancel to zero. B) be equal. C) be unequal. D) more easily support Burl and Paul.
Two cranes are lifting identical steel beams at the same time. One crane is putting out twice as much power as the other. Assuming friction is negligible, what can you conclude is happening to explain this difference?
a) The crane with double the power must be lifting its beam four times as fast. b) The crane with double the power must be lifting its beam twice as fast. c) The crane with double the power must be lifting its beam twice as slowly. d) The crane with double the power must be lifting its beam four times as slowly.
Temperature increases with altitude in the
A) troposphere. B) thermosphere. C) mesosphere. D) all of these
The combining of two nuclei to form a larger nucleus with the release of energy is
a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. beta decay.