Two 14.5° pressure angle, mating, 5-pitch gears have 30 and 110 teeth. in practice, the gears are mounted at a center distance 0.7 inches greater than the design center distance. the pinion rotates at 175 rpm. what is the pitch line velocity in practice? be sure to state the answer in the appropriate units. show all calculations to several significant figures.

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?