Triaxial compression tests are a common laboratory

technique for determining elastic properties and

strengths of rocks at various pressures p and temperatures.

Figure 3.6 is a schematic of the experimental

method. A cylindrical rock specimen is

loaded axially by a compressive stress σ1. The sample

is also uniformly compressed laterally by stresses

σ2 = σ3 < σ1.

Show that

ε2 = ε3

and

σ1 − σ2 = 2G(ε1 − ε2).

Thus if the measured stress difference σ1−σ2 is plotted

against the measured strain difference ε1−ε2, the

slope of the line determines 2G.

Write a one-paragraph response to each of the questions below.

1. Explain what is meant by the term "Self Esteem" and how it affects one's personal and professional life.

2. Describe the "food pyramid" and explain its purpose, how it can be used, and how you can use it to help manage your health.

3. Explain what is meant by "non-verbal communication," then describe some examples of positive and negative non-verbal communication behaviors and gestures.

4. Name some time management and organization techniques that are useful at home, in school, and in the workplace. Identify those that you use and explain how you use them.

5. Identify the purpose of setting short-term and long-term goals. Explain how setting goals can be used as a measure of whether you have met a goal.

6. Explain the difference between good stress and bad stress and give examples of each type. Describe at least two ways that you handle stress in your daily life.

7. Compose a consumer letter of complaint concerning a product or service that you feel was misrepresented.

8. Name a problem in your community and identify community resources that could help to solve the problem.