Assuming the stress-strain curves provide here all correspond to the same polymer, which tensile test was most likely performed at the highest temperature above Tg? Choose (e) if none tests likely meet this condition. 80 a 70 60 b 50 Stress (MPa) 40 с 30 20 10 d 0 0.1 0.2 0.3 Strain

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.