An Si-O bond with a Young’s modulus of 9*1010Nm-1 have an elliptical crack of depth 7nm. The surface energy is 2.29 J. E
Posted: Thu Jul 14, 2022 12:36 pm
a) 4.32*109Nm-1
b) 6.32*109Nm-1
c) 5.2*109Nm-1
d) 3*109Nm-1
b) 6.32*109Nm-1
c) 5.2*109Nm-1
d) 3*109Nm-1