Acylindrical bar that has its lateral surface constrained so that there can be no lateral expansion is then loaded with an axial compressive stress σ . (a) find σ22 and ơ33 in terms of σ and the poissons ratio v, and (b) show that the effective young's modulus eeff = σ11/€11 is given by eeff = (1-v)/(1-20-202)

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation