Agate is good protective energy stone, especially for children, and is very calming and soothing. It also can help strengthen the body's connection to the earth.
The friction factor, f, is a dimensionless factor that depends primarily on the velocity u, diameter D, density Ï, and viscosity Î·. It is also a function of wall roughness which depends on the size Îµ, spacing Îµ' and shape of the roughness elements characterized by Îµ''.
ANSWERS TO END-OF-CHAPTER QUESTIONS. What are the four supply factors of economic growth? What is the demand factor? What is the efficiency factor? Illustrate these factors in terms of the production possibilities curve. The four supply factors are the quantity and quality of natural resources; the quantity and quality of human resources; the stock of capital goods; and the level of technology. The demand factor is the level of purchases needed to maintain full employment. The efficiency factor refers to both productive and allocative efficiency. Figure 17.1 illustrates these growth factors by showing movement from curve AB to curve CD.