Apolymeric cylinder initially experiences a stress with magnitude (absolute value) of 1.1 mpa when compressed.

after 49 days the magnitude of the stress is found to have decreased to 0.51 mpa.

determine approximately how long, in days, it will take until the magnitude of the stress reaches 1/10 (one-tenth) of its initial value?

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.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

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