If the 20-mm-diameter rod is made of a-36 steel and the stiffness of the spring is k = 61 mn/m , determine the displacement of end a when the 60-kn force is applied. take e = 200 gpa.

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Which type of basaltic lava flow has a fairly smooth