Assume if the shear stress in steel exceeds about 4.00 3 108 N/m2, the steel ruptures. Determine the shearing force necessary to (a) shear a steel bolt 1.00 cm in diameter and (b) punch a 1.00-cm-diameter hole in a steel plate 0.500 cm thick.
Lecture 7 Objectives 1. Describe the characteristics of epithelial sheets 1) Little space between cells, held tightly together by cell-to-cell junctions, vascular, no blood vessels betwee n cells, limited in thickness bc nutrients are received via diffusion, Specialized for absorption and protection Lateral interdig itations adjacent cells intertwin membranes. 2) Continuous rate of cell division, epithelial stem cells, 90% on cancer occur in epithelial cells bc increase cell turnover mean increase chance of mutation. 3) Cells are polarized, one side is different from the o the pical- exposed surface (away from blood sup ply) asal- surface anchored to connective tis
