Technician A says a conventional vehicle with the engine at the front and drive wheels at the rear uses a drive shaft to transmit torque from the transmission to the final drive. Technician B says the automatic transmission uses a torque converter instead of a clutch. Who is correct? Group of answer choices

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)