(Solved):   A glass plate contains an atomic-scale surface crack. (Take the crack- tip radius diameter ...

 

A glass plate contains an atomic-scale surface crack. (Take the crack- tip radius diameter of an O²- ion.) Given that the crack is 1-µm long and the theoretical strength of the defect-free glass is 7.0 GPa, calculate the breaking strength of the plate. 1/2 C ?m TM = 20 ( € ) 1² HINT: 1) O 2-ion radius 0.132 nm