1.An electron is released from rest at a perpendicular distance of 9.9 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 9.0 ?C per meter. What is the magnitude of the electron's initial acceleration?
2.A 12 foot W14 X 22 column with pinned ends is axially loaded. The max load it can carry is 34 ksi. Determine (a) Euler buckling stress, (b) Euler buckling load. (A = 6.49 in^2) (ry = 1.04 in) (Iy = 7.00 in^4)
3.A 30 feet column is braced at the mid-section to prevent premature failure. If the maximum load is 380 kips, select an appropriate W14 section, if any, to support the loading conditions.