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)

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?