During the isothermal heat rejection process of a carnot cycle, the working fluid experiences an entropy change of -0.7 btu/r. if the temperature of the heat sink is 95 of, determine a) the amount of heat transfer b) the entropy change of the sink c) the total entropy change for this process, considering that for the system and that for the sink.

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

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)