section $2.$ True or False. Please circle correct option. $(1$ point each$)$

Q$1.$ Temperature impacts $K_{ic}$ of a material.

True

False

Q$2.$ Failures can happen when the margin of safety is less than $0.$

Q$3.$ Mean stress $=\frac{1}{2^{**}}($max stress $-$ min stress$).$

True

True

False

False

Q$4.$ For a crack growth, after the critical crack size is achieved, the crack grows in an uncontrolled and

exponential manner

Q$5.$ The more cathodic a material is$,$ the slower it corrodes.