From the following numbered list of mechanical characteristics, decide which pertain to (a) the matrix phase, and which are displayed by (b) the dispersed phase for fiber-reinforced composites. (1) Stiff (2) Relatively weak (3) Low elastic modulus (4) Brittle (5) Quite ductile (6) Quite strong (a) - 2,5 (b) - 1,3,4 (a) - 2 (b) - 1,4 (a) - 2,3,5 (b) - 1,4,6 (a) - 1,4,6 (b) - 3,5 Click if you would like to Show Work for this question: Open Show Work

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.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?