1.

The vertical stress is proportional to __________

A. \(\frac{z^2}{K_B} \)
B. \(\frac{K_B}{z^2} \)
C. \(\frac{K_B}{z^3} \)
D. \(\frac{z^3}{K_B} \)
Answer» C. \(\frac{K_B}{z^3} \)


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