For a plane stress problem, the strain components in the xyplane at a point \(P\) are computed as:

a. Compute the state of stress at this point if Young's modulus \(E=2 \times 10^{11} \mathrm{~Pa}\) and Poisson's ratio \(v=0.3\).

b. What is the normal strain in the zdirection?

c. Compute the normal strain in the direction of \(\mathbf{n}=\{1,1,1\}^{\mathrm{T}}\).

Exx Eyy=.125 10-2, Exy=.25 x 10-2.