An engineering component has, at a certain point on its free surface, strains given by = 1.1e-3, = 2.0e-4, and = 5.0e-4. the young’s modulus is 200 gpa and possion’s ratio is 0.33. what tensile yield strength is needed for the material of this component if a safety factor of 3.0 against yielding is required? assume (a) the tresca yield criterion, and (b) the von mises yield criterion. (820 mpa. 710 mpa)

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

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

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way